UGG boot and slipper sizing guide

For UGG-style footwear in our wholesale catalog, sizing runs in European (EU) sizes starting from EU 21, which covers toddlers through adults. Unlike most athletic sneakers, UGG boots and slippers typically fit snug at first and loosen slightly with wear, so buyers often stick to their true EU size for a cozy feel. If your customers prefer wearing thick socks, consider recommending one size up.

Here’s a quick reference: EU 21 roughly equals US 5.5 toddler, EU 30 fits US 12 kids, and adult sizes begin around EU 36 (US 5/UK 3.5) up to EU 48. For most adult buyers, EU 40 = US 7 / UK 6.5, EU 42 = US 8.5 / UK 8, and EU 45 = US 11 / UK 10. Since UGG styles often run in whole sizes only, half-size wearers should size up for comfort.

When placing bulk orders, you can mix models within the same size range to hit your MOQ—our flexible wholesale terms allow mixing across the UGG collection or even with other footwear like New Balance styles. All items are unbranded and sourced directly from supplier studios, with EU sizes clearly listed on each product page.

Message us on WhatsApp for a quote on your desired sizes and quantities.