Chanasya Internal Frame Hiking Backpack - Large - Green/Gray Padded shoulder straps, padded waist belts and padded lumbar area for maximum comfort - with airflow system to reduce heat Top-loading main compartment, sleeping bag compartment, and pair of side zippered pockets Full length adjustable torso and adjustable shoulder straps for a more comfortable fit Have Strong Internal Metal Frame Structure Size-28inchx12inch x8inc , Material Nylon