Ritche Smokey Grey rubber watch band is made of liquid silicone,surprisingly softer and more comfortable than a rubber strap.It features stretchable designs with uniuqe texture,solid brushed buckle and also tapered from lug to the end.It has two layers with different colors and can match watches hands or dials perfectly.

Specs: 

Material:Dural and flexible silicone

Taper:Yes(22mm lug width-20mm buckle)

               (20mm lug width-18mm buckle)

Length:110mm*120mm*75mm

Waterproof

Compatibilty:

It can fit for most watches that have standard lug connections such as Seiko 007 and Seiko 009,even some fossil watches.Also fit for smart watches like Samsung galaxy watches,Huawei watch 2 classic and so on.It is a good watch bands replacement to choose.
You can use a 22mm width band with:
Galaxy Watch3 (45mm)
Galaxy Watch (46mm)
Gear S3 Frontier
Gear S3 Classic

You can use a 20mm width band with:
Galaxy Watch4 Classic (42mm & 46 mm)
Galaxy Watch4 (40mm & 44mm)
Galaxy Watch Active 2 (40mm & 44mm)
Galaxy Watch Active (40mm)
Galaxy Watch (42mm)
Galaxy Watch3 (41mm)