VBESTLIFE Bike Riser Block, Black, Aluminium Alloy for Indoor Bicycle Training, Fits Most Sizes

FUNCTION --- This riser block keeps your front tire in place and raises the front just enough that you will not be sliding off your seat while pedaling, keep steady and straight for better cycle training ANTI-SLIP PAD --- Anti-slip feet stay in place and eliminate handlebar vibrations, which will protect your floor form damage during training USED FOR --- Fits most sizes of bikes, fits all road and mountain bikes. This is ideal for indoor training STURDY MATERIAL --- Aluminium alloy made wheel riser, and lightweight. SIZE --- Appro 22.8× 11.8 × 5.7cm / 8.97in × 4.46in × 2.24in,the riser block is suitable for indoor training