HydraPak SkyFlask Speed - Collapsible Handheld Running Water Bottle (350ml, 500ml, 500ml Insulated) - Adjustable Strap, Lightweight, Spill-Proof Cap

AMBIDEXTROUS FIT: Featuring an Ambidextrous fit, the SkyFlask can be carried in either hand with or without the thumb loop., ADJUSTABLE HAND STRAP: Adjustable hand strap, cinches down for a precise fit., THUMB LOOP: Soft, padded thumb loop lets you hold the flask in either hand without gripping or squeezing., SPEEDFILL CAP: Leakproof 42 mm SpeedFill cap provides fast refill access., LIGHTWEIGHT AND COMPACT: Soft material conforms to your hand and packs away when empty.