More to explore:
Züpers Leggings come with removable knee pads, so girls can be as active as they'd like and don't have to worry about their clothes!
Right Meow Handmade Unisex Kitty Cat Organic Cotton Jersey Knit Pants Harems or Leggings for Newborn Baby, Toddlers and Kids - Boy or Girl
Lion Head organic cotton leggings modern leggings by SweetKiddoCo
Origami clothes by trommpo. Very interesting seaming, probably batiste weight because the seams could get bulky, but they are also staggered so seams don't converge much.
The Ultra Skinny Legging // Plum Tally
Varpunen: Mainio clothing
Pull & Bear kids fashion | justbymanon
virgin cotton wool leggings