Ring Seatpost Bahan Karet Anti Air Untuk Sepeda Gunung

Color: red, black,green, clear
Large: 30-34 (for 30.4/30.8/30.9/31.6/33.9mm diameter of seatpost)
Package: 1*samll&1*large
Size: Small: 25-30 (for 25.4/27.2mm diameter of seatpost);
Material: soft silicone
If you don't know your seat post size, you can buy 2 of them, combination to use.
effectively protect the seat paint and seat tube internal cleaning, prevent dust rain water from entering;
this product has high elasticity, is more closer to seat post and compatible with most of seat post;
beautiful decoration for your bike!