Gel Bike Seat Cover has a very good manufacturing quality, it is comfortable and resistant (I stretched it to fit a bigger seat and it resisted well). I haven't tried it on longer rides, but it looks reliable.
Description: Enjoy a smooth ride with our gel padded seat covers that's perfect for cyclists and those who love bike riding. Designed with 3 layers of gel padding for shock absorption and sweat absorbing material, you can have a comfortable ride while avoiding soreness.
Highlights: Adjustable draw string 3 Layers of gel to provide ultimate comfort Non-slip lining Material Absorbs Sweat and Moisture Fits most standard bike seats, including BMX, mountain, and road bikes