100% Cotton.
Wash cold, do not bleach, dry flat.
Martinus is wearing a size Large and Ella is wearing a Medium.
| Size | Body length (A) | 1/2 chest (B) |
| 8-10 years (130/140) | 51 cm | 38 cm |
| 12-14 years (150/160) | 61 cm | 42 cm |
| S | 66 cm | 46 cm |
| M | 70 cm | 50 cm |
| L | 74 cm | 54 cm |
| XL | 78 cm | 58 cm |