Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.
Logging miles on hot days or racing in the summer heat — staying cool is key. This minimalist handheld keeps hydration cool 38% longer than a standard flask. An innovative thumb loop allows you to hold the flask securely without gripping or squeezing. Versatile and ambidextrous, it can be fitted to either hand. The adjustable, sweatproof strap fits most hand sizes and snuggly stays in place with a Velcro-style closure. Topped with our SpeedFill™ Cap for quick refills on the go.
We are a Seattle, WA based outdoor gear store with a mission to make climbing, backpacking, skiing & mountaineering accessible and enjoyable for everyone.
© 2026, Master Store
