The bottle is charcoal, marked with the Ninth Layer insignia from the BSRI field team in Bennington — the kind of equipment that gets signed out under a classified project code and never returned. Layers down with only a headlamp and a bad feeling, the drink inside still stays cold.

Double-wall copper vacuum insulation. 22oz. Rated past Layer 9.

For readers who kept going even after the hum started.

Authorized personnel only.

- Dimensions: 10.60" x 2.90" (26.92 x 7.37 cm)
- Weight: 363 g
- Spill-proof design
- Scratch and fade-resistant
- Powder-coat finish
- BPA-free
- Blank product sourced from China