Insole: 10mm curly UGGpure wool, added arch support. outsole: 1 1/2 inch . This evolution of our Classic boot features a small wedge heel and slimmer silhouette, rendered in plush sheepskin and pretreated to repel water and stains. You can pair this versatile style with just about anything â try a knit dress or slim jeans. Quick tip: This boot has a more traditional fit than the Classic boot, and is designed to be worn with bare feet. If you would prefer to wear it with socks, consider ordering a half size up.If you are unsure which shoe size to purchase, please follow the following steps:1)Draw a straight line, longer than your foot, on a piece of paper.2)Place the paper on a flat surface. Stand on the line with your heel and longest toe centered on the line. If measuring a child's foot, it may be easier to hold the paper up to their foot.3)Place a mark on the line at the tip of the longest toe and at the back of the heel.4)Repeat steps 1-3 for the other foot.5)Measure the distance between the marks. Take the larger of the two measurements