High Sierra A.T. Trapezoid Boot Bag Large main compartment with U-shaped opening. Mesh helmet holder inside the main compartment. Tricot-lined media pocket with molded headphone port holds an MP3 player, cell phone or PDA player. Adjustable padded backpack straps with suspension system to help absorb the weight of your gear. Two zippered side compartments hold boots up to size 13 for better weight distribution.