Power your performance
Vacuum-insulated stainless steel bottles built to keep up with every climb, sprint and 9-to-5. 24h cold. 12h hot. Lifetime guaranteed.
Best sellers
The flagship insulated bottles powering athletes from Brooklyn to Boulder.
Shop by color
Picked to match your vibe. Limited drops monthly.
Built to outlast your routine
Triple-wall vacuum insulation, food-grade 18/8 stainless, and a leak-proof straw lid that survives the gym, the trail and the office. Dishwasher safe. BPA-free. Lifetime warranty.
Discover the techWhy GenFlask
Performance specs, simply put.
24h cold / 12h hot
Triple-wall vacuum insulation locks temperature for a full day.
Lifetime warranty
Drop it, dent it, send it back. We've got you.
Plastic-free
18/8 food-grade stainless. BPA-free silicone.
Dishwasher safe
Dishwasher top-rack approved. No babying required.
Color you'll actually use
Six core colorways and limited-edition seasonal drops. Powder-coated finish that resists scratches, dishwasher cycles and your gym bag.
Browse colorsLoved by 50,000+ athletes
Verified reviews from the GenFlask community.
“Ice stays ice all day. Survived three Crossfit sessions. Best bottle I've ever owned.”
“The pink one matches everything. Lid doesn't leak in my gym bag. 10/10.”
“Replaced three other bottles with this. Cold water on the trail at hour 8 is unreal.”