Product details:

The Pro Tongue offers a thinner, softer toebox and lower volume tongue than many stock liners and can improve the fit in both the forefoot and instep areas. This liner comes with a removable 7 mm foam insert in the sole, which may be removed if using a custom footbed. Tongue & Cuff Reinforcements Medium Volume Works best with a shell fit of one – two fingers (1/2-1 ?). If your shell is a half size, round down for this liner. 2 mm Stroble Sole Anti-Microbial Lining Treatment | Intuition Pro Tongue Liner 2023 - 23