1.Lightweight & Durable Bmx Seat Combo: Made Of High-Density Foam And Sturdy Materials For Long-Lasting Comfort And Impact Resistance During Rides. 2.Universal Fit Seatpost Sizes: Includes 25.4mm And 27.2mm Seat Posts To Fit Most Bmx Bikes, Easy To Install And Adjust For A Perfect Riding Position. 3.Ergonomic Comfort Design: Padded Bmx Saddle Reduces Pressure And Fatigue, Ideal For Long Sessions, Dirt Jumping, Racing And Casual Riding. 4.Stylish & Practical: Sleek Black Finish Fits Any Bmx Frame, Resistant To Wear And Tear, Suitable For Both Adult And Youth Riders. 5.Complete Bmx Upgrade Kit: Comes With Seat And Seat Post Set, Perfect For Replacing Old Or Damaged Parts And Restoring Your Bike’S Look And Performance. POLSO specializes in outdoor products, especially bicycle accessories, and complete vehicles. Safety, comfort, health, is our brand concept.We pay attention to product quality and safety, provide professional after-sales service. We are committed to ensuring that every customer is safe, comfortable and healthy in outdoor sports. We will develop more products so that more people can enjoy the outdoor life without worry, continue to exercise, and stay healthy.