Tough 500D Vinyl will resist scrapes and abrasion on the trail. All-welded construction seals out any water. Roll-down seal with side (compression) or top (maximum volume) closure. Mesh side pockets for drinks or quick-access items. Breathable mesh straps and padding. Lash points for lights. Daisy-chain webbing to secure carabiners to the side of the bag. Grab handle, for grabbing.