7-8 Years - 26-28" - 71cm 9/10 Years - 28-30" - 76cm 11/12 Years - 30-32" - 81cm 13/14 Years - 32-34" - 86cm 15/16 Years - 34-36" XS Boys - 5/6 Years

XS - Size 8 (30" Chest) 76cm Small - Size 10 (32" Chest) 81cm Medium - Size 12 (34" Chest) 86.5cm Large - Size 14 (36" Chest) 91.5cm XL - Size 16 (38" Chest) 96.5cm XXL - Size 18 (40" Chest) 101.5cm

Small Adults Medium Adults Large Adults XL Adults XXL Adults

XS - Size 8 (30" Chest) 76cm Small - Size 10 (32" Chest) 81cm Medium - Size 12 (34" Chest) 86.5cm Large - Size 14 (36" Chest) 91.5cm XL - Size 16 (38" Chest) 96.5cm XXL - Size 18 (40" Chest) 101.5cm

XS Adults Small Adults Medium Adults Large Adults XL Adults XXL Adults 3XL Adults

Large Adults Small Adults Medium Adults XL Adults XXL Adults

Small Adults Medium Adults Large Adults XL Adults XXL Adults 3XL Adults 4XL Adults

Small Adults Medium Adults Large Adults XL Adults XXL Adults 3XL Adults 4XL Adults

Small Adults Medium Adults Large Adults XL Adults XXL Adults 3XL Adults 4XL Adults

Medium Adults Large Adults XL Adults XXL Adults

Small 34-36" Chest (88/96cm) Medium 38-40" Chest (96-104cm) Large 42-44" Chest (104-112cm) XL 46-48" Chest (112-124cm) XXL 50-52" Chest (124/136cm) 3XL 54-56" Chest (136-148cm) Adult 4XL - 55-57" (148-160cm) Adult 5XL - 58-60" (160-172cm)