Fjord is built for the heat. Its double-walled vacuum insulation and 316 stainless steel core keep your Agua ice-cold for 12+ hours—even in 90°C heat. The outer silicone sleeve stays cool to touch (under 45°C), so you don’t burn your hand like with bare metal bottles. Unlike cheap flasks, it won’t warm up fast or ruin your drink.

Nope. Fjord uses medical-grade 316 stainless steel and food-safe silicone—zero BPA, phthalates, or heavy metals, even at 100°C. That plasticky taste you get from other bottles? Gone. It’s the cleanest, safest choice for Agua electrolyte mixes.

Because metal bottles get scorching in saunas. Fjord’s thick liquid silicone sleeve stays cool, adds grip (even with sweaty hands), and never melts or breaks down like TPE or plastic coatings. It’s sweat-proof, slip-proof, and built to last.

You can—but it’s optimized for cold. In saunas, cold hydration is key. Fjord keeps drinks under 10°C for 12+ hours. For hot drinks, it retains heat up to 6 hours. But we recommend Agua cold, to rehydrate after intense sweat loss.

The bottle is dishwasher-safe (top rack), and the wide mouth makes scrubbing easy. The sauna accessories bamboo lid is naturally antimicrobial, helping prevent bacterial buildup. Just use mild soap and avoid anything abrasive to keep the silicone looking sharp.

That’s a built-in heat warning. Fjord’s thermochromic strip changes color if the bottle gets too hot to touch—so you’ll never accidentally grab a scorcher again. Simple, smart, and safety-first.

Upgrade your sauna accessories. Pop the stainless mesh insert in, drop your Agua packet, shake. The mesh lets electrolytes infuse evenly without clumping. It keeps your hydration cold, stable, and potent—exactly what your body needs pre- or post-sauna.

If you’re prone to heat sensitivity, Fjord helps by keeping your drink cold and safely grabbable. Still, speak with a healthcare provider before intense heat exposure if you have any medical conditions. Hydration is critical—Fjord makes it easier.

Yes. Fjord is made from 50% recycled stainless steel, natural bamboo, and recyclable silicone. No plastic waste. No toxins. Just sustainable, long-life materials designed to last.

Fjord comes with a lifetime insulation warranty and 30-day no-hassle returns. If you’re not thrilled, we’ll make it right. Our mission: no leaks, no burns, no regrets.