Vacuum insulation between double stainless steel walls keeps water cold for eighteen hours, which covers most multi-hour rides without thermal degradation. The insulation gap prevents heat transfer from ambient temperature, so water that starts cold at the beginning of a summer ride stays cold when you need it most during the hardest efforts up climbs or into headwinds. This eliminates the problem of lukewarm water that happens with single-wall bottles on long, hot rides where you're out for three or four hours and temperature matters for both hydration effectiveness and simple drinking preference. At 354 grams, the bottle weighs more than plastic but delivers thermal performance that plastic double-wall bottles can't match for duration or consistency.

The high-flow cap design removes the squeeze requirement that comes with plastic bottles. You flip the cap open, tip the bottle, and drink—the vent tube system allows air to enter as water exits, which maintains flow rate without requiring you to compress rigid steel walls that won't give under hand pressure. The leakproof lockout twist mechanism seals the cap completely shut during transport, preventing the slow drips or full leaks that happen when caps aren't properly secured. You can throw the bottle in a pack or bag without worrying about leaks soaking your gear or creating messes in enclosed spaces. The cap system is compatible with other CamelBak Podium caps if you want to swap components between bottles for different use cases.

CamelBak constructs the bottle from 18/8 stainless steel, a corrosion-resistant grade that doesn't transfer metallic taste to water or retain flavors from previous fills. If you've switched between plain water and electrolyte mixes in other bottles and noticed lingering flavors that persist through washing, stainless grade matters for maintaining neutral taste session after session. The bottle fits standard cages without modification or force, though the steel construction will show scratches and scuff marks from cage contact over extended use—this is cosmetic wear that doesn't affect the vacuum seal or insulation performance between the walls. All components disassemble for cleaning without tools. The twenty-two-ounce capacity provides enough hydration for rides up to two hours without requiring multiple bottles or frequent stops to refill at fountains or stores.