Keep what you need, inside your bikeThe Trek BITS Tool Bag creates storage space inside the frame of your BITS-compatible Trek bike. The bag is designed to securely hold tire levers, CO₂ inflator, and CO₂ cartridge so you'll never be stranded without the tools to fix a flat. Store your tools and more inside your Trek frame with the Trek BITS Tool Bag. Designed for Trek bikes with internal frame storage for your ride essentials Securely holds tire levers, CO₂ inflator, and CO₂ cartridge (sold separately) Trek BITS Tool Bag may accommodate spare road and gravel tube sizes Outer material is made from durable and lightweight UltraGrid(tm) and made from 50% recycled fiber Water-resistant construction and padded bottom to prevent contents from rattling and keep your gear safe Not recommended for Trek Speed Concept SLR