I wear a L top and size 14 jeans, 36D. Literally within hours they fit perfectly. Great for keeping my feet in the soles when walking down steep hills on the trails. The sizing is all wrong! When I requested a return £12 was deducted of my refund. Can?t use them because they?re not the same width and mess up my bearing designs. When the truck hit my face my left bud went flying and was lost in the blood and chaos so I needed an entirely new set since you cant replace just one bud apparently. The Samsung version matches the buds and original charging case so when you open them theres not such an ugly difference. Biggest battery. I did read other reviews before purchasing and I did order half size larger and it fit perfect.