Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon 3D Hydro 2L Reservoir by Gregory Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $44.95 Optic Blue / One Size - $44.95 Color Optic Blue Size One Size Availability: Translation missing: en.general.icons.icon_check_circle icon Only 5 left! 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Looking for Local Pick-up? Choose a store below. Product Locator by Locally Notify me when back in stock Email address Email me when available The unique, soft-molded design of the 3D Hydro Reservoir provides comfort and stability on the trail, and dries quickly thanks to the integrated hanger. The custom SpeedClip attachment system makes integrating to Gregory compatible packs painless.