MoonSwatch Mission to the Sun · Ref. MOONSWATCH MISSION TO THE SUN · 20mm lug
At a Glance
| # | Best For | Strap | Material | Thickness |
|---|---|---|---|---|
| 1 | Overall / First Purchase | Taupe Epsom Slim Strap | Epsom Calfskin | 2.2mm |
| 2 | Dressy / Formal | Glossy Grey Crocodile Signature Strap | Crocodile | 4.5–2.2mm |
| 3 | Everyday / Casual | Grigio Pueblo Slim Strap | Pueblo Calfskin | 2.2mm |
| 4 | Minimalist / Refined | Black Shell Cordovan Slim Strap | Shell Cordovan | 2.2mm |
| 5 | Casual / Relaxed | Light Grey Rubberised Leather (Togo) Signature Strap | Togo Leather (Rubberised) | 4.5–2.2mm |
| 6 | Active / Sporty | Grey CTS Rubber Strap | FKM Rubber | 4.0–3.3mm |
| 7 | Comfort / Wildcard | Red Alcantara Signature Strap | Alcantara | 4.5–2.2mm |
There is a reason the MoonSwatch Mission to the Sun (ref. MOONSWATCH MISSION TO THE SUN) keeps showing up in conversations about the best watches in its class. The finishing and attention to detail speak for themselves. It wears its 20mm lug width elegantly, and that is where aftermarket straps come in.
The case with its 13.25mm profile gives you just enough wrist presence to anchor different strap materials without the watch disappearing. Here are my 7 picks — and why each one works.
Quick Specs
| Case diameter | |
| Lug width | 20mm |
| Lug-to-lug | |
| Case thickness | 13.25mm |
| Water resistance | 30m (3 ATM) |
| Crystal | Domed hesalite |
| Case material | BIOCERAMIC (2/3 ceramic, 1/3 bio-sourced plastic) |
| Movement | Quartz (Swatch calibre) |
The 20mm lug width means your options are curated but well-covered. Already know what you're looking for? Browse all MoonSwatch Mission to the Sun-compatible straps on the Strap Finder →
1. Best Overall — Taupe Epsom Slim Strap
Every watch needs a go-to strap, and for the MoonSwatch Mission to the Sun, this is it.
The Taupe Epsom Slim Strap features Epsom leather, tanned by Haas. The fine, uniform grain gives it a clean, contemporary look that resists scratches and moisture with ease. This is leather that looks as sharp six months from now as it does on day one. At 2.2mm thick, it balances presence and wearability nicely.
Paired with the MoonSwatch Mission to the Sun's distinctive dial, this strap adds a layer of personality that the factory option does not offer. The 13.25mm case thickness means a padded strap like this one feels proportional and substantial.
It's the kind of pairing that makes you wonder why you didn't try it sooner.
Other colours worth considering:
- Black Epsom Slim Strap
- Tinware Grey Epsom Slim Strap
- Hunter Green Epsom Slim Strap
- Izmir Blue Epsom Slim Strap
2. Best Dressy — Glossy Grey Crocodile Signature Strap
When you need to dress the MoonSwatch Mission to the Sun up, this is the strap that delivers.
The Glossy Grey Crocodile Signature Strap is made from genuine crocodile leather with a distinctive scale pattern that no embossed leather can replicate. The texture adds visual depth and character that works equally well with a suit or a smart-casual outfit. At 4.5–2.2mm thick, it balances presence and wearability nicely.
On the MoonSwatch Mission to the Sun, this strap preserves the watch's go-anywhere character. The case at 13.25mm thick pairs naturally with the padded construction without creating any imbalance on the wrist.
The range goes deeper if you want to explore:
- Glossy Caramel Crocodile Signature Strap
- Glossy Emerald Crocodile Signature Strap
- Glossy Lagoon Blue Crocodile Signature Strap
- Glossy Taupe Brown Crocodile Signature Strap
3. Best Everyday — Grigio Pueblo Slim Strap
For daily wear, comfort and versatility matter more than anything else.
The Grigio Pueblo Slim Strap features Buttero leather from the Walpier tannery in Italy. This vegetable-tanned leather develops one of the most beautiful patinas in watchmaking — scratches blend into the surface and the colour deepens over time. If you enjoy watching your strap age gracefully, this is the one. At 2.2mm thick, it balances presence and wearability nicely.
Paired with the MoonSwatch Mission to the Sun's distinctive dial, this strap adds a layer of personality that the factory option does not offer. The 13.25mm case thickness means a padded strap like this one feels proportional and substantial.
The range goes deeper if you want to explore:
- Dark Brown Pueblo Slim Strap
- Navy Pueblo Slim Strap
- Natural Pueblo Slim Strap
- Cognac Pueblo Slim Strap
4. Best Minimalist — Black Shell Cordovan Slim Strap
Minimalism isn't about doing less. It's about doing exactly what's needed.
The Black Shell Cordovan Slim Strap is crafted from premium materials with careful attention to detail and construction quality. At 2.2mm thick, it balances presence and wearability nicely.
Paired with the MoonSwatch Mission to the Sun's distinctive dial, this strap adds a layer of personality that the factory option does not offer. The 13.25mm case thickness means a padded strap like this one feels proportional and substantial.
If this style appeals but you want a different tone:
- Navy Shell Cordovan Slim Strap
- Cognac Shell Cordovan Slim Strap
- Natural Shell Cordovan Slim Strap
- Green Shell Cordovan Slim Strap
5. Best Casual — Light Grey Rubberised Leather (Togo) Signature Strap
For those days when the MoonSwatch Mission to the Sun comes out with jeans and a t-shirt.
The Light Grey Rubberised Leather (Togo) Signature Strap uses rubberised leather — a material that blends the look and feel of leather with the water resistance and durability of rubber. The smooth finish is clean and modern, and the pastel colour options add a playful element to otherwise serious watches. At 4.5–2.2mm thick, it balances presence and wearability nicely.
On the MoonSwatch Mission to the Sun, this strap preserves the watch's go-anywhere character. The case at 13.25mm thick pairs naturally with the padded construction without creating any imbalance on the wrist.
Once you see it on the wrist, it just clicks.
The range goes deeper if you want to explore:
- Black Rubberised Leather (Togo) Signature Strap
- Navy Rubberised Leather (Togo) Signature Strap
- Colibri Rubberised Leather (Togo) Signature Strap
- Hunter Green Rubberised Leather (Togo) Signature Strap
6. Best Sporty — Grey CTS Rubber Strap
Active wear demands a strap that can handle sweat and splashes. This one does.
The Grey CTS Rubber Strap is made from FKM rubber — a high-performance elastomer that resists chemicals, heat, and ageing. Unlike silicone, it does not attract dust or lint. Cut-to-size construction means you trim it to your exact wrist measurement — no leftover tail, no keepers. At 4.0–3.3mm thick, it balances presence and wearability nicely.
Paired with the MoonSwatch Mission to the Sun's distinctive dial, this strap adds a layer of personality that the factory option does not offer. The 13.25mm case thickness means a padded strap like this one feels proportional and substantial.
If this style appeals but you want a different tone:
7. The Wildcard — Red Alcantara Signature Strap
Think of this as the strap you didn't know you needed.
The Red Alcantara Signature Strap is crafted from Alcantara — the same Italian material used in luxury car interiors and high-end sportswear. It has a suede-like softness that is immediately comfortable, with a luxurious hand feel that belies its toughness. At 4.5–2.2mm thick, it balances presence and wearability nicely.
The MoonSwatch Mission to the Sun's case is ideally proportioned for this strap. Whether you are wearing it casually or dressing it up, the combination feels intentional. It is the kind of pairing where both the watch and strap look better together than apart.
Alternatives in the same family:
- Dark Grey Alcantara Signature Strap
- Baby Blue Alcantara Signature Strap
- Brown Alcantara Signature "Teddy Bear" Strap
- Dark Brown Alcantara Signature Strap
A Note on Buckle Colour
Quick but important: always match your buckle to your case. The MoonSwatch Mission to the Sun's BIOCERAMIC (2/3 ceramic, 1/3 bio-sourced plastic) case calls for a silver (brushed or polished) buckle. All Delugs leather straps ship with a pin buckle and can be upgraded to a Spring Deployant Clasp for extra security and convenience. All Delugs straps come with quick-release spring bars pre-installed, so swapping straps takes seconds.
How to Change the Strap on Your MoonSwatch Mission to the Sun
Swapping straps on the MoonSwatch Mission to the Sun is one of the easiest upgrades you can make — and with Delugs straps, you don't even need a tool.
If your MoonSwatch Mission to the Sun came on a bracelet, you'll first need to remove it. The easiest way to do this at home is with a Bracelet Removal Tool, which lets you compress the spring bars without risking scratches to the lugs or caseback. Once the bracelet is off, you can slide your new Delugs strap straight in.
All Delugs straps come with quick-release spring bars already pre-installed, so changing straps is completely tool-free. Here's how:
- Prepare your workspace. Lay the watch face-down on a soft cloth or microfiber pad to protect the caseback from scratches.
- Release the spring bar. Locate the small lever on the quick-release spring bar. Pull it back with your fingernail or fingertip to compress the bar.
- Remove the strap. While holding the lever, angle the strap out from between the lugs. Repeat for the other side.
- Insert the new strap. Slide one end of the spring bar into the lug hole. Pull the lever on the quick-release spring bar knob, guide the entire spring bar into the opposite lug hole, and then release the knob. You should hear a small click when the spring bar extends and seats into the lug hole.
- Check the fit. Give the strap a gentle tug to make sure both spring bars are securely locked in. If there's any play, reseat the spring bar.
The entire process takes under a minute once you get the hang of it — no spring bar tool required. The MoonSwatch Mission to the Sun uses a standard 20mm lug width, and all Delugs straps in 20mm will fit perfectly.
Frequently Asked Questions
What is the lug width of the MoonSwatch MOONSWATCH MISSION TO THE SUN?
The MoonSwatch MOONSWATCH MISSION TO THE SUN has a 20mm lug width. While 20mm is less common than 20mm, there is still a strong selection of quality straps available. All Delugs straps are available in 20mm.
What is the reference number for the MoonSwatch Mission to the Sun?
The reference number for the MoonSwatch Mission to the Sun is MOONSWATCH MISSION TO THE SUN. You can find this on the caseback of your watch or on the original paperwork. Knowing your reference number helps ensure you get the right lug width when ordering a strap.
Can I use a dressy leather strap on a MoonSwatch versatile watch?
The Mission to the Sun is one of the most versatile watches in the MoonSwatch lineup — it takes both dressy and casual straps equally well. That's part of what makes it such a rewarding watch for strap changes. Don't be afraid to experiment.
Do Delugs straps come with spring bars?
Yes — every Delugs strap comes with quick-release spring bars pre-installed. This means you can change straps by hand in seconds, without needing any tools. The quick-release mechanism uses a small lever that you pull with your fingertip to compress the spring bar.
What is the best strap material for the MoonSwatch Mission to the Sun?
The Mission to the Sun's versatile nature means it works with almost everything. Start with what matches your most common wearing occasion — rubber or sailcloth for active use, nubuck or waxy leather for everyday, and alligator or saffiano for dressier moments. The Strap Finder makes it easy to browse by material and style.
Does MoonSwatch use quick-release spring bars?
Most MoonSwatch watches use standard spring bars that require a tool to remove. All Delugs straps come with quick-release spring bars pre-installed, so once you make the switch, future changes are completely tool-free.
Where can I find straps compatible with the MoonSwatch MOONSWATCH MISSION TO THE SUN?
The MoonSwatch Strap Finder shows every Delugs strap compatible with the MOONSWATCH MISSION TO THE SUN, filtered by lug width and style. You can also use the general Strap Finder to browse by brand, collection, and material. If you need help choosing, our team is available 24/7 via live chat.
Finding Your Strap
The beauty of the MoonSwatch Mission to the Sun is that it rewards experimentation. A dressy alligator for the office, nubuck for the weekend — each strap brings out a different side of the watch.
Use the MoonSwatch Mission to the Sun Strap Finder to see every compatible strap in one place, filtered to your exact reference. Or if you'd rather explore by feel, the general MoonSwatch Strap Finder lets you browse the full lineup and find your match.
Not sure which strap is right for your specific Mission to the Sun? Our team is available 24/7 via live chat — drop us a message and we'll help you find the perfect match for your watch, wrist size, and style.
About Delugs
Founded in 2018 and headquartered in Singapore, Delugs is dedicated to elevating the experience of watch ownership through the simple yet powerful act of strap changing. We believe that straps are integral to how a timepiece is worn, perceived, and enjoyed. Our mission is to make strap changing a lifestyle — an everyday act of self-expression and versatility.
Delugs is an independent brand with a global community of clients, with a strong online presence and growing physical retail footprint. Our direct-to-consumer focus keeps us closely connected with the watch enthusiast community — fostering conversations, hosting events, and helping shape a more inclusive and expressive culture around watch collecting. We also work closely with watch brands to craft straps that complement their timepieces, bridging the gap between brand and collector, form and function.
Our catalogue spans leather, rubber, and fabric straps, with options for every watch and every occasion. We are committed to craftsmanship and quality, product design and innovation, and outstanding customer service. We offer watch owners the freedom to change straps as easily as changing outfits, and the opportunity to engage more deeply with the watches they love.
Visit our flagship boutique at Raffles Hotel, Singapore →
— Marcus
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