Hydro Flask Wide Mouth Flex Cap 5051-289
Press to open modal with high resolution version of current image

Hydro Flask Wide Mouth Flex Cap

Free shipping on orders over $50
Free store pickup available at some stores: inside or at the storefront

Rocksolid Guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, undergarments and swimwear excluded).

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

Found a better deal in Canada? Up to 30 days after purchase – 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

Replace a lost lid, or just up your insulation game with this Flex Cap.

  • Honeycomb insulation helps keep your drink the right temperature.
  • Fits all wide-mouth Hydro Flask Bottles.
  • Soft TPU handle running on a stainless steel pivots.
  • Dishwasher safe and recyclable PP#5.

Tech specs

Show Tech specs
Ideal for
  • Everyday use
  • Yoga and fitness
  • Camping and hiking
  • Day hiking
Made in China