Dy Ryer Compact Collapsible Folding Leak Proof Water Bottle - For Travel Sports Exercise Etc. Folds and rolls up easily when empty, stands when full Extremely lightweight BPA free material design, dishwasher safe, easy to wash Easy to fill - wide opening lets you put in ice cubes etc. Designed to easily open lid with one hand Built-in hook lets you clip on to pants, handbag, backpack etc. and keeps it folded for compact packing