The suspension is clearly dimensioned and the shock absorber can be adjusted according to specific obstacles or conditions. Good elasticity, can effectively reduce bumps, play a buffer role, and make riding more comfortable. Steel and aluminum material, the product is durable. The product is 16.5cm long, 8.5cm wide and 4cm high. Suitable for mountain bikes, road bikes, dead gear bikes, etc. Product name: Saddle shock absorption material: Steel, Aluminum Color: Black weight: 100kg Features: Adjustable, wear-resistant, good toughness size Details: 16.5cm x 8.5cm x 4cm / 6.50" x 3.35" x 1.58" (approx.) Note: Due to the light and screen setting difference, the item's colors may vary slightly from the pictures. Due to different manual measurements, please allow for slight differences in size. Package includes: 1 saddle shock absorber (others not included)