DURABLE CONSTRUCTION - The Endurace ski skins are a 65/35 mohair/nylon mix skin that will take you to the far reaches of the mountains. Fast, light, grippy, and durable, these are great skins for everyday use UNIVERSAL LENGTH - These Big Sky Mountains Endurance skins are offered in the universal length of 200cm which allows you to assemble the tip clip yourself and trim your skins to a custom length UNIVERSAL CONNECTORS - Tip connectors are designed to work universally by slipping the notch of the connector over your tip. This is a secure and easy-to-use system no matter the shape of your skis WIDTH - Subtract 10mm from the tail width of your ski and purchase the narrowest width which is either greater than or equal to this width.If the width of your ski tail is 115mm, we would recommend a 110mm skin PACKAGE INCLUDES - Pre-attached tails and clips; Tip connectors; 4 rivets for tip connectors; Nail as a hole punch; 1 block of skin wax; BSMP sticker; Utility knife