Climbing Riser Block Aku which conforms to your boot

which conforms to your boot without pressure points

3mm Proprietary molded rubber is built for durability and molded for optimal comfort

Fit: Relaxed

the Z Lite SOL has an R-Value of 2

Reinforcement on bottom leg

Climbing Riser Block Aku which conforms to your bootFor a stable, worry free ride with any rear wheel mounted trainer. Unique 3 level design lets you select the level of difficulty. Product Features For a stable, worry free ride with any rear wheel mounted trainer. Unique 3 level design lets you select the level of difficulty. Stack two blocks to simulate climbing workouts. Three different positions to raise your front wheel and simulate hill climbs 2. 1 inches (5. 3 cm) 2. 7 inches (6. 8 cm) 3. 1