Comfy, squeezable flask. perfect for vest pocket. - Ultraspire UltraFlask - 550mL

Have a couple of these I use in my ultraspire velocity vest. PROS: They fit great in the front and back side pouches and ride comfortably against the body. Good flow rate from the cap and soft squeezable plastic makes drinking easy on the Run. Plastic is squeezable, but structured enough to stand up on a table or slide one handed into a pouch without flopping around even when empty. CONS: Flask opening is a bit small which makes it tough to quickly add ice in the aid stations. Cap pulls open easily and seals well but would love a splash resistant race valve option.

This review was written in the old system and had content requirements that are different than reviews written today.