Of course buying clothes on-line means you can not try them on first. To ensure you order your size simply take out of one of your favourite t-shirts and measure across the chest, (under arm to under arm). Our t-shirts measurements are;
Men's Sizes Women's Sizes
Small 20 in / 50 cm Extra Small 17 in / 42 cm
Medium 21 in / 53 cm Small 18 in / 45 cm
Large 22 in / 56 cm Medium 19 in / 47 cm
X-Large 24 in / 60 cm Large 20 in / 50 cm
XX-Large 25 in/ 64 cm X-Large 21 on / 52 cm