Krios Pro Helmet Size Chart:
| HEAD CIRCUMFERENCE (cm) | 53-54 | 55-56 | 57-58 | 59-60 | 61-62 | 63-64 | 65-66 | |
| HELMET SIZE | XS | S | M | L | XL | 2XL | 3XL | |
| SHELL SIZE | M | M | M | L | L | L | L | |
| EPS SIZE | M | M | M | L | L | L | L | |
| COMFORT LINER | XS, S, M | L, XL, 2XL, 3XL | ||||||
| CHEEK PAD SIZE | XS -30mm, S-25mm, M-20mm (M-15mm) | (L-30mm), L-25mm, XL-15mm, 2XL-15mm, 3XL-10mm | ||||||
| CHEEK PADS | XS-MD 30mm, SM-MD 25mm, SM-MD 20mm, (SM-MD 15mm) | (LG-3X 30mm), LG-3X 25mm, LG-20mm, LG-3X 15mm, LG-3X 10mm | ||||||
Krios Helmet Size Chart:
| HEAD CIRCUMFERENCE (cm) | 54-55 | 56-57 | 58-59 | 60-61 | 62-63 | 64-65 | |
| HELMET SIZE | S | M | L | XL | 2XL | 3XL | |
| COMFORT LINER | S, M | L, XL, 2XL, 3XL | |||||
| CHEEK PADS | S-25cm, M-20cm | L-25cm, XL-20cm, 2XL-15cm, 3XL-10cm | |||||
F5 / F5 Koroyd Helmet Size Chart:
| HEAD CIRCUMFERENCE (cm) | 54-55 | 56-57 | 58-59 | 60-61 | 62-63 | 64-65 | |
| HELMET SIZE | M | L | XL | 2XL | 3XL | ||
| SHELL SIZE | M | L | |||||
| EPS SIZE | M | L | |||||
| COMFORT LINER | M, L | XL, 2XL, 3XL | |||||
| CHEEK PAD SIZES | (S-25mm), S-25mm, M-20mm, L-15mm, (L-10mm) | (XL-25mm), XL-20mm, 2XL-15mm, 3XL-10mm | |||||
| CHEEK PAD RANGE | (SM-LG 30MM), SM-LG 25MM, SM-LG 20MM, SM-LG 15MM, (SM-LG 10MM), (XL-3X 25MM), XL-3X 20MM, XL-3X 15MM, XL-3X 10MM | ||||||
