Uni Uni Sanitary Pants, Size XL Stay Dry. Stay Fresh. Stay Comfortable. Uni Uni uses Japan-developed SAP technology to quickly absorb liquid and help keep you feeling dry and comfortable all day. The absorbent material spreads liquid evenly without clumping, while helping reduce unpleasant odors. Soft, comfortable, and easy to wear, it’s designed to keep you feeling fresh and confident throughout the day.