Love riding when you travel? Weekends spent at the races? Or just want to be able to train in a small living space? Meet the Omnium Zero-Drive Portable Trainer. The foldable, compact and adaptable fork-mount design keeps the rear wheel on the bike and offers the most dynamic ride quality of any trainer available. Plus it's unique roller design is so quiet you'll never disrupt the neighbors. When you're finished, the elegant folding design hides in its padded tote like it was never there. Add a Sweat Guard and Floor Mat and you're armed with the complete training package. - Zero Resistance is ideal for high-speed spinning and track cycling workouts - Adaptable fork-mount and sliding sled design (16"-29" wheel; thru-axle and QR compatible) - Lightweight 13.3lb (6.03kg) design makes it the ideal, portable cycling training partner - Precision machined 4.25" aluminum rollers create a smooth and quiet ride - Dynamic, free-floating rear wheel design promotes the most realistic riding experience of any stationary bike trainer - Included fork adapters: - 9mm Quick-Release - Thru Axle: 12x100mm, 15x100mm & 15x110mm - Available fork adapters: - Cannondale Lefty, 20x100mm (BMX thru axle), 8mm x 74mm (folding bike) - Adaptable to virtually any bike size and geometry - Optional Sled Extension (up to 1348mm wheelbase with optional extender) - No tools required to assemble or store -- simply unfold for cycling training and fold for storage and travel - Maintenance-free resistance unit and roller bearings - Includes heavy-duty, water- and abrasion-resistant tote bag for easy transport and storage