Have a good look at the size chart below to determine the right size for you.

PLEASE NOTE: OppoSuits have a slim-fit design. When in doubt between two sizes, we recommend you to pick the larger size of the two.

OppoSuits Adult Onesie size chart, Size US/EU XS, Chest 39.0 inch 99 cm, Total 59.8 inch 152 cm, Sleeve 24.8 inch 63 cm Size US/EU S, Chest 40.6 inch 103 cm, Total 61.4 inch 156 cm, Sleeve 25.2 inch 64 cm Size US/EU M, Chest 42.1 inch 107 cm, Total 63.0 inch 160 cm, Sleeve 25.6 inch 65 cm Size US/EU L, Chest 43.7 inch 111 cm, Total 64.6 inch 164 cm, Sleeve 26.0 inch 66 cm Size US/EU XL, Chest 46.0 inch 116 cm, Total 66.1 inch 168 cm, Sleeve 26.4 inch 67 cm Size US/EU 2XL, Chest 48.0 inch 122 cm, Total 67.7 inch 172 cm, Sleeve 26.8 inch 68 cm




Grab a tape measure, write down the measurements and compare with our size chart for the right size.

Hold the tape horizontally to measure:

  • Chest, around the widest part

Hold the tape vertically to measure

  • Total, from the shoulder to the ankle
  • Sleeve, from the shoulder to the wrist