Шкарпетки Happy Socks унісекс
| Sock Size | 36-40 | 41-46 |
| EUR Shoe Size | 36-40 | 41-46 |
| U.S. Sock Size | 9-11 | 10-13 |
| U.S. M Shoe Size | 4½-7½ | 8-12 |
| U.S. W Shoe Size | 5½-9½ | 10-12½ |
| U.K. M Shoe Size | 4-7 | 7,5-11,5 |
| U.K. W Shoe Size | 3,5-6,5 | 7-11 |
| JPN Shoe Size | 23-25,5 | 26-29,5 |
| CN Shoe Size | 23-25cm |
25.5-28cm |
Шкарпетки дитячі Happy Socks
| Age | Size | |
| 0-12 m | 15-18 | |
| 12-24 m | 19-22 | |
| 2-3 y | 23-26 | |
| 4-6 y | 27-30 | |
| 7-9 y | 31-34 |
Колготки дитячі Happy Socks
| Age | Size | |
| 6-12 m | 74-80 cm | |
| 12-18 m | 80-86 cm | |
| 18-24 m | 86-92 cm |
Жіноча білизна Happy Socks
| SIZE | XS | S | M | L |
| EUR Size | 32-34 | 36-38 | 38-40 | 42-44 |
| UK / AUS Size | 4-6 | 8-10 | 10-12 | 14-16 |
| US Size | 0-2 | 4-6 | 6-8 | 10-12 |
Чоловіча білизна Happy Socks
| SIZE | S | M | L | XL |
| EUR Size | 46 | 48 | 50 | 52 |
| US Inches | 28-30 | 31-32 | 33-34 | 34-36 |
| UK/AU/US | 36 | 38 | 40 | 42 |