Suitable: D20/D3+/D3F Material: metal, silicone, alloy. Equipping with kids saddle, foot pedals can give you and your children a safer and more comfortable experience Comfortable Cushion, The seat and back cushion is comfortable and smooth to touch, have good elasticity, wear-resistant to use The ergonomic and soft seat and anti-slip pedal ( 9.5 x 7 cm ) The Front bike soft seat and anti-slip pedal for toddler front-mounted design, better view, and more enjoyable ride for the child. Easy to Install, There comes with a complete set, easy to install and remove. Nice accessory for your d-y-u bike bicycle, Mountain Bikes, Hybrid Bikes, Fitness Bikes