Each product have different size charts,please look at the last picture for each product carefully before you buy it. Due to measurement deviation, we suggest you go 1 size upper! All authentic SOMTHRON products sold through Amazon.com are sold only by the seller SOMTHRON. We have registered the brand of SOMTHRON. SOMTHRON is specialized in all kinds of American men's and women's fashion with competitive price,high quality, fashion style and large quantity in stock. Note: 1. Size chart is only for reference, there maybe a little difference with the item you get. 2. Color differences allowed for light effects and monitor settings.Also,please allow 1-2 cm deviation due to manual measurement. Your kindly understanding and support are highly appreciated. About Shipping 1. Usually ship in 1-3 business days 2. 8-15 Business Days by USPS,1-2 Business Days by FBA(Fulfilled by Amazon) Guarantee: We have strict quality inspection before shipping.pls feel free to contact us with the order's details if anything come out . SOMTHRON will get in touch with you asap and do whatever we can to offer you a pleasant shopping experience. Thank you.