For Winter 2023, the Solite 8mm Custom gets the Solite 2.0 sole upgrade, changing the game again for barefoot feel, performance, warmth, and durability in the most frigid conditions. The 8mm Custom 2.0 integrates the Solite 2.0 Sole in the cleanest, simplest package that essentially disappears on your feet. If you want the world's lightest, barely-there boot, the 8mm Custom 2.0 is your answer.