Extra Small

Chest 28-32in / 71-81cm

Small

Chest 32-36in / 81-91cm

Medium

Chest 36-40in / 91-102cm

Large

Chest 40-44in / 102-112cm

Extra Large

Chest 44-48in / 112-122cm

2 Extra Large

Chest 48-52in / 122-132cm

3 Extra Large

Chest 52-56in / 132-142cm