The pillow in the Snap Box is padded with a soft, sponge-like material and comes in an "M"-shape that allows for easy compression. Regardless of whether your wrist size is 14cm or 19cm, or whether you use a strap or a bracelet, these pillows can handle it all. 

Compressible Pillows Fit Wide Range of Wrist Sizes
The pillow in the Snap Box is padded with a soft, sponge-like material and comes in an "M"-shape that allows for easy compression. Regardless of whether your wrist size is 14cm or 19cm, or whether you use a strap or a bracelet, these pillows can handle it all.