Shoeslulu Magic Absorbent Ultra Thin Lambskin Leather Insoles with Breathable Activated Carbon Bottom Leather SIZING RECOMMENDATION - [Men] sizes we recommend ordering half size bigger; [Women] sizes please order your regular size. STAY COMFORTABLE- Stay comfortable all day on your feet (and of course taking off your shoes in front of your loved ones) with our newest Magic Absorbent technology! BREATHABLE MATERIAL - Seamless one piece handcrafted high quality lambskin leather for comfort and moisture absorption. Slightly perforated and padded to keep your feet dry and comfortable. Breathable carbon bottom helps control and prevent foot odor. ULTRA THIN - Ultra thin design so it will work well with your current inserts (measure less then 0.2 inches)! Slightly padded provides cushioning comfort while not taking up too much shoe space! Precisely positioned and shaped to your foot and will not shrink! Light weight! NEW VERSION - [Full Massaging With Arch Support] Slightly thicker (measure less then 0.3 inches), fill with massaging blocks and padded arch support.