See Kai Run Toddler Boys "Dane" Shoes have kept my active toddler boys feet warm & able to actively play due to the very soft, flexible soles. The front laces are just elastic with the top strap having Velcro making them easy to get on & off my sons feet, which is always a struggle. I was impressed with the durability, breathability & flexibility of the shoes materials which is very important while being under 3 yrs old. There also is a light fleece inner lining inside to help keep feet warm but not overheating. This was my first purchase w this brand & am impressed enough to seek out a summer shoe too.