Saris Climbing Block size_one-size Lining: 88% Polyester

Lining: 88% Polyester

5" for additional packing space

Comfortable When Worn Under a Helmet

Adjustable Heelcups

Active fit

Saris Climbing Block size_one-size Lining: 88% PolyesterFor 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 1 inches (5. 3 cm) 7 inches (6. 8 cm) 1 inches (7. 9