So Ill pink & gray geometric triangle pattern backpack #geometric #triangles Outfitted with TPU material for extreme durability and dry bag capabilities, this space-saving, collapsible design and top velcro closure/buckle secures your chalk when not in use. The ON THE ROAM signature collection, in collaboration with So iLL, includes callouts to Jason Momoa’s triangular patterned tattoo (Niho Mano).