Front wheel with full 360-degree swivel. Ultra smooth-rolling 20-inch rear wheels. Folds to fit easily in most trunks or storage areas. Sling seat with 5-point safety harness. Handle bar is adjustable to various heights. About Aosom LLCAosom LLC, located in Tualatin, Oregon, aims to make your life more convenient through its wide range of items. Those passionate about fitness and the outdoors will find interest in the bike trailers and indoor bike trainers. Aosom also offers massage tables, baby products, and pet products. Shop with confidence and find exactly what you're looking for with Aosom.