Please choose jackets according to the US Size, if you hesitate in the two sizes, please select the bigger one. US Size------- Height (inch) ------- Waist (inch) ------- Weight (lb) -- XXS-------- 61-64 inch ----------- 26-28 inch -------- 99-115 lb -- XS-------- 64-66 inch ----------- 28-30 inch --------- 115-132 lb -- S--------- 66-68 inch ----------- 30-33 inch -------- 132-145 lb -- M-------- 68-70 inch ----------- 33-36 inch -------- 145-172 lb -- L --------- 70-72 inch ----------- 36-39 inch -------- 172-198 lb -- XL ------- 72-75 inch ----------- 39-42 inch -------- 198-218 lb -- XXL ------ 75-78 inch ----------- 42-47 inch -------- 218-252 lb