I bought these because I was looking for a light-weight boot for everyday wear. My two-year-old thinks the light-up dinosaur is just about the best thing he's ever seen.  I like these boots because they're relatively light so don't weigh down his little feet like bulky snow boots can.  These have kept his feet dry and warm while walking on snowy sidewalks, but we haven't tried them for playing in the snow.  I measured his feet according to the sizing info link Amazon provides and I found the boot size accurate.