Features: Ambidextrous ultralight weight gaming mouse for ideal for Razer Viper Ultimate wired Mouse. High quality Silicone material for speed control, and anti-slip. Textured slip-resistant design with sweat-wicking properties. Extremely thin low-profile thickness for optimal comfort. Full-body design for easy application, suck sweat very well. Specifications: Material:Silicone Weight: 5g Color:Black Size:approx. 5x5cm/1.97x1.97in Compatiability: Suitable for Razer Viper Ultimate Wired Mouse Optional Type: Mouse Side Sticker / 1 Set Mouse Pack Sticker and Two-Button Stickers (Without Mouse) Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Set X Mouse Skin (Without Mouse)