Booties by UGG Australia Chestnut nubuck crib booties with soft sheepskin shearling lining, hook and loop strap and EVA outsole.   - S 2-3 (6-12 months) - M 3-4 (12-18 months) - L 4-5 (18-24 months) About UGG Australia UGG Australia employs the finest standards of craftsmanship in the world, utilizing a variety of premium materials that feel like nothing else - from plush sheepskin to burnished, oiled suede, washed canvas and tumbled distressed leather making them luxuriously irresistible.