GSI Boulder Flask

Press to open modal with high resolution version of current image

GSI Boulder Flask

  • Available prices $18.00

Rocksolid Guarantee

Shop with confidence. If it's not working out like you expected, you can return it.

Really. If it's not up to snuff after you use it (a couple times) you can still bring it back.

It lasts longer than 30 days, but not forever. We'll be fair about it. We're all members here.

Price match guarantee

Find a lower price within 30 days? We’ll match it.

If you see a lower price for this exact item advertised online, in print or in a store, give us a call at 1 (888) 847-0770.

If it’s identical, brand-new, in stock, and sold and shipped by a Canadian-based retailer, we’ll match that price.


Show Description

Imbibe safely with this shatter-resistant flask. Made from rugged co-polyester, this flask is tough enough to take a spill or two and the silicone bumper won't slip easily out of your hand.

  • Silicone bumper provides a great grip, gloved or ungloved.
  • Clear co-polyester panels let you quickly gauge how close you are to empty.
  • Hinged cap gives you one less thing to keep an eye on.
  • Wide mouth opening makes for fast filling, and fast emptying.
  • Dimensions: 9.4 x 2.8 x 16.5cm.

Tech specs

Show Tech specs
Weight 122g
Ideal for Everyday use
  • Co-polyester
  • Silicone
Volume 296ml
Dishwasher safe

Dishwasher safe (top rack only) make sure no parts are touching the heating element.

BPA-free Yes
Made in China