DART II The Dart II is a lightweight and narrow profile lumbar that is ideal for short trail runs or hikes. One 22 oz. black LDPE bottle included. Some features include: adjustable waistbelt, Hypalon™ attachment loop for blinker attachment, headphone port, and a foam insulated water bottle holder. Made from 100% Recycled PET fabric. Dimensions: 8'' x 6'' x 1.5''. Wt: 3 oz.