Climbing Riser Block Aku the Z Lite SOL has

the Z Lite SOL has an R-Value of 2

Add a TPU Chassis

Reinforcement on bottom leg

The durable #1468 boots come with an extra set of footbeds to help with growing children's feet

Built-in Bottle Opener

Climbing Riser Block Aku the Z Lite SOL hasFor 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