Hydro Flask Standard Mouth Sport Cap
Best one-handed hydration solution for active, on-the-go lifestyles.
This insulated cap transforms a standard bottle into a high-flow, one-handed hydration system. It is the ideal upgrade for those who need quick, quiet sips without stopping their momentum.
$9.95
at
Marathon Sports
Who it's for
- Active commuters needing quick hydration while on the move
- Athletes wanting a steady, mess-free water flow
- Commuters carrying gear who need hands-free bottle transport
Who should skip it
- Commuters tossing bottles into bags where leaks cause damage
- Outdoor adventurers requiring maximum ice retention for long days
- Germ-conscious users who prefer touch-free drinking mechanisms
Performance breakdown
One-handed accessibility
The sport cap design makes on-the-go hydration effortless and seamless.
Thermal retention
TempShield insulation reliably keeps beverages at your preferred temperature all day.
Build durability
Pro-grade stainless steel construction withstands daily drops and rugged outdoor use.
Leak resistance
Generally secure, though the sport valve can occasionally weep under pressure.
Cleaning ease
Intricate cap crevices require dedicated brushes for a thorough, sanitary clean.
Material safety
BPA and phthalate-free materials ensure your water remains clean and untainted.
Key Specs
Capacity
21 oz
Material
18/8 Pro Grade Stainless Steel
Insulation
TempShield Protected
Lid Type
Sport Cap
Model Number
S21ST435
UPC
817318023252
Know before you buy
Still have a question?
Ask Metto anything about the Hydro Flask Standard Mouth Sport Cap before you decide.
