High-quality silicone rubber
Waterproof (Perfect for sports and diver watches)
Strap thickness: 4.5mm
Stainless steel square buckle

20mm: Buckle Width 20mm. length: 80mm and 135mm
22mm: Buckle Width 20mm. length: 80mm and 135mm

*Free  with purchase of any 3 or more watch straps from our website. 
(Free tool will not be reflected during checkout but will be added into your package during fulfillment)