Features: Fits children from 8 months to 4 years old and weighing less than 50kg(110lb). Fits most bike with seatpost diameter: 25-38mm / 0.98-1.50", and the front inclined beam width: Max. 50mm / 1.97". Not suitable for some irregular bike model and bike without seatpost and front inclined beam,like suspension bikes,electric vehicle,etc. Steel structure is stable and safe.Good choice to take your child out by your bicycle. Soft seat fence can be opened to allow your kids to get on and off the bike. Seat height can be adjusted to accommodate children of different ages and heights. Soft cushioned saddle fit nicely around kids' hips and protect their hipbone from injuries. Quick release attachment,easy to install and remove. Non-slip handlebar grip provide kids better grip. Foldable pedals meet your different demands. Safety belt provides more safety during cycling. Specification: Color: Red / Green (optional) Model: Type A / Type B (optional) Type A: No safety belt Type B: With safety belt Material: Steel + Plastic + Foam Fits bike seatpost diameter: 25-38mm / 0.98-1.50in Fits bike front inclined beam width: Max. 50mm / 1.97in Loading capacity: Max. 50kg / 110lb Fits children age: 8 months to 4 years old Package size: 34*31*31cm / 13.4*12.2*12.2in Package weight: approx. 3.0kg / 6.6lb Package List: 1* Set of Bike Children Seat (with hardware)