KULKEA Boot Trekker - Ski Boot Backpack polyester Technically designed, large premium ski boot backpack for alpine ski boots, helmet and gear. Highly compartmentalized and technically featured for organization and maximum preparedness. Fabrics: Durable, water resistant nylons, polyester and Tarpaulin. Sizing: Ski boots up to Mondo 31 (US Shoe Size-Mens 13). Dimensions: 18H x14.5L x 18W (expands up to 19.5W). Volume: 69L / 4200 cu in. Features include: Two large side Boot Pockets with ventilation, Large top loading Central Gear Compartment, Pack Release for easy removal, Deployable Helmet Sling, & water-resistant Tarpaulin bottom with drainage grommets.