This is our most popular bag because of its heavy-duty wheels and dual pull #10 Delrin zipper around main opening. Its features boast of an extension handle with zippered closure; a main compartment with reinforced panels on back and bottom; side, front and top padding; mesh sleeve that can be used to hold a water bottle or sunscreen, lotion, bug spray, etc.; padded top and side handles;side fin pockets with built-in drainage panels; silent shock-absorbing skate wheels that are impervious to salt, sand, dust, dirt and will not rust like metal roller bearings; a regulator pocket with padded regulator bag; interior straps to keep load secure and prevent shifting; and a padded accessory pocket with key clip