Snug-fitting knit poly-nylon shell is dipped in nitrile, a marvelously gripping soft rubber that latex-sensitive people can use. Snug fit and tacky surface preserve dexterity. Backs are partly uncoated to improve ventilation. Your hands get wetter (therefore colder) in wet situations than they do with the more completely coated Hercules Gloves. If you want a little extra warmth, use these with wool or silk liners. In our experience, touchscreens (including smarphones) with screen protectors can still be operated while wearing these nitrile gloves! Machine washable. Unisex sizes: Extra-small (5–6" around knuckles), Small (6–7"), Medium (7–8"), Large (8–9"), Extra-Large (9–10"). If in doubt, order the smaller size.