Nitro Power Shell TonguePower Shell Tongue for one pair of Nitro boots. These have a stiff flex.
SizingSmall: MP 23.0–25.5 / US Men’s 5.0–7.5 / US Women’s 5.5–8.0
Medium: MP 26.0–28.5 / US Men’s 8.0–10.5 / US Women’s 8.5–11.0
Large: MP 29.0–32.5 / US Men’s 11.0–14.5