Billed as body jewelry, Lolos are constructed of silicone but feel like thin foam. Large enough to cover any size nipple, but discreet enough to wear under any garment, they smooth out the area and add a little spice to a casual outfit or add another touch of glam to a dressy get-up. The adhesive is strong enough to keep the coverings from slipping, but not so strong as to make them painful to remove. Can be reused.