CyclingDeal Indoor Trainer Bike Front Wheel Riser Block with 3 Different Heights

COMPATIBILITY: Compatible with any frame size bike with 26", 27.5", 700c bikes. NOT compatible with 29" bikes. Great for quick release rear wheel bikes.
WIND RESISTANCE: The wind resistance offers reliable resistance adjustment. Please note: It is noisier than magnet trainer.
STABLE & FOLDABLE : The trainer supporting legs are relatively wide. Also, you can fold it for easy storage.
CyclingDeal Indoor Trainer Bike Front Wheel Riser Block With 3 Different Heights