Product features High quality silicone material, soft and durable. Waterproof and sweat-proof, moderately soft and comfortable to wear. Porous design Ventilation and heat dissipation. The appearance of fashion and elegance, bright colors, show your personality, fashion novel. There are two sizes for you to choose from. S: Fits wrists 140-205 mm around ( 5.5" ~ 8.1") and L: Fits wrists 150-230 mm around ( 6.1" ~ 9.1") Specifications: Material: silicone Size :S ,L Color: A variety of colors Package includes :1 piece silicone strap Note: Strap only, not watch. Due to manual measurement, please allow the error of 1-2cm. Please confirm that you do not mind again.