My granddaughter has tiny hands for a 3 year old.  We had looked and looked for waterproof mittens for her tiny hands with no luck.  These mittens had the length listed in the sizing so I was able to get just the right pair  for her.  The added features of the long knit cuffs and the hooks to keep them together were awesome bonuses.  She was finally ably to play in the snow with warm, dry hands.  I'll be buying more of these.