Our editors independently research, test, and recommend the best products and services; you can learn more about our review process here. We may receive commissions on purchases made from our chosen links.
Best Overall: Stanley Classic Flask at Amazon
"The screw-on cap is attached to a plastic hinge so you never have to worry about losing it."
Best Budget: GSI Outdoors Boulder Flask at Amazon
"Packs in a lot of smart features for the discerning spirit-lover at an affordable price."
Best for Backpackers: VSSL Flask at Amazon
"Merges all your backpacking essentials into something that's designed to carry spirits."
Best for Sharing: High Camp Firelight 750 Flask at Huckberry
"It comes with two tumblers for easy sharing and can carry an entire bottle of wine."
Best for Cocktails: Yeti Rambler at Amazon
"Double-wall vacuum insulation means it will keep your chilled cocktails cold for up to 24 hours."
Best Stainless Steel: Stanley Unbreakable Hip Flask at Amazon
"Comes with a machined-steel cap crafted with internal threads for a smooth sipping experience."
Best Lightweight: Nalgene Flask at Amazon
"Despite its larger-than-average size, this flask only weighs 4.3 ounces."
Most Durable: Snow Peak Titanium Curved Flask at Amazon
"Made of durable titanium, which is chemically inert and carries no flavor residue."
We won’t say flasks are essential when it comes to camping and backpacking. But if you enjoy your spirits, having a few nips at the end of a long day in the wild may be one of life’s most singular pleasures. Flasks can keep your libations cold or hot for hours and most will stand up to the rigorous abuse of the outdoors. A few even come with integrated shot glasses and cups to help disperse the joy, and some can double as a measuring cup. It's also helpful when the lid is connected to the flask's body, so you won't lose it as you pass the flask around.
Below are our picks for the best camping flasks available.
Our Top Picks
Best Overall: Stanley Classic Flask
With a timeless look, Stanley’s Classic Flask illustrates why sometimes keeping things simple is its own reward. The 8-ounce vessel is constructed of durable 18/8 BPA-free stainless steel and weighs a perfectly reasonable 6.4 ounces. It also comes with a leakproof screw-on cap attached to a plastic hinge so you never have to worry about losing the cap. The opening is wide enough to accommodate a standard funnel, or just pour your choice of spirit directly in, if you’ve got a steady hand. We say go with the classic hammertone green color, but Stanley also offers this flask in white, matte black, and deep blue.
Best Budget: GSI Outdoors Boulder Flask
GSI Outdoors fully embraces the (responsible) partying aspect of camping—after all, they’re the one who made a campsite ready hand-cranked blender. And their new affordable Boulder Flask packs in a lot of smart features for the discerning spirit-lover, including hash marks along the side to help measure your pour. Made of see-through, shatter-resistant copolyester and lined with a grippy silicone bumper, it’s both durable and light. Ridges on the lid make it easy to open even when wearing gloves and the cap is attached to a hinge, offering quick access to its wide mouth. It's available in 6- and 10-ounce sizes.
Best for Backpackers: VSSL Flask
Calling the VSSL a flask does not do the product justice. It’s more like all your backpacking essentials got together and merged with something designed to carry spirits. VSSL boasts a bright 200-lumen LED flashlight with four lighting modes (bright, dim, red, and SOS) with up to 40 hours of burn time, an oil-filled precision compass that works in temperatures ranging from -14 degrees up to 112 degrees, and a high-grade cast aluminum bottle opener. It also stores 9 ounces of your favorite spirit, with an interior that’s been glass-infused to preserve flavor. The flask even comes with two collapsible 1.5-ounce stainless steel shot glasses that nest inside; just unscrew the flashlight, and you get access to the glasses and bottle opener. Crafted of military-grade aluminum, it’s durable and waterproof, and measures only 9 inches long with a pour-friendly 2-inch diameter. It's available in green and silver.
Best for Sharing: High Camp Firelight 750 Flask
When it comes to supplying libations for a crowd, go with the Firelight 750 Flask from High Camp, which holds 25.4 fluid ounces, so it can carry a fifth of spirits or an entire bottle of wine. It also comes with two tumblers that pop off the bottom and top of the main flask and re-attach via magnets. All elements are crafted out of durable 18/8 stainless steel, along with a leak-proof cap featuring a silicone seal, and a no-drip lip for seamless pouring. The wide-mouth opening makes it easy to fill without using a funnel, and the product is both PBA- and phthalate-free.
The high-end insulation in the flask will keep cold drinks chilled for up to 24 hours, and the double-walled construction in the cups provide additional insulation to keep your beverages cold—or hot—while you sip them. The entire product weighs a reasonable 29 ounces and measures under 12 inches. It comes in a striking copper, stainless steel, or black gunmetal.
Best for Cocktails: Yeti Rambler
Yeti markets their 12-Ounce Rambler as the ideal vessel for coffee or tea. But wise campers who want to up their cocktail game can use it to haul a few rounds of their favorite drink, then reuse it the next morning to hold java. Double-wall vacuum insulation means it will keep chilled cocktails like a Negroni cold for up to 24 hours, and drinks like hot toddies warm for up to 12 hours. The 18/8 kitchen-grade stainless steel construction is also puncture- and rust-resistant. And then there’s the “hotshot cap,” which provides leak-proof protection. When you want to pour out your beverage, twist the cap halfway until it clicks and then you can consume the beverage from any angle.
Best Stainless Steel: Stanley Unbreakable Hip Flask
Constructed of 1-millimeter 18/8 stainless steel that’s then colored-powder coated, the aptly named Unbreakable Hip Flask is one of the most durable flasks on the market. It comes with a machined-steel cap crafted with internal threads for a smooth sipping experience and is attached to a flip-hinge to keep the lid connected when swigging. A wide mouth makes it easy to fill right to the brim for 8 ounces of spirits, and it's both dishwasher-safe and BPA-free. Choose from the classic foundry black or olive drab color options, or go bright with the striking desert sienna colorway.
Best Lightweight: Nalgene Flask
With a maximum volume of 12 fluid ounces, the Nalgene Flask is one of the largest camp-friendly flasks on the market. It holds enough liquid to keep the solo backpacker stocked for several nights, or plenty to pass around the campfire over the course of several hours. Constructed of BPA-free plastic, it includes a polycarbonate outer sleeve, which provides a bit of insulation and protection to the polyethylene inner flask. The screw-off lid sits underneath a one-ounce shot cap. Thankfully, despite its larger-than-average size, it only weighs 4.3 ounces (and only 1.9 ounces if you ditch the outer layer and shot glass). Plus, it has a slightly concave bend in its body so it can sit flush inside your backpack. Both English and metric graduations on the side make it easy to pour—or fill—the desired amount without guesswork.
Most Durable: Snow Peak Titanium Curved Flask
Sleek, stylish, and light, the Titanium Curved Flask from Snow Peak employs a historic Japanese craftmanship process when shaping the durable metal, which is chemically inert and carries no flavor residue. The flask holds 6.4 fluid ounces, is secured by a leak-proof twist-off cap, and weighs only 2.5 ounces. Better still, the flask comes with a handsome storage case and a funnel to help you pour your favorite spirit. It's also backed by a lifetime warranty.