If you don't know what size to purchase, can you tell me your height, weight, chest and waist measurements? So I can help you find the right sizeTagSizeLengthChestHeightWeightcm | inchcm | inchcmkgS59cm |23.2''80cm |31.4''150-15535-40M60cm |23.6''83cm |32.6''155-16040-45L62cm |24.4''94cm |36.9''160-16545-50XL63cm |24.8''96cm |37.7''162-16850-55XXL64cm |25.2''98cm |38.5''165-17055-603XL65cm |25.5''100cm |39.3''170-17560-65