【Soft Muslin Cotton 】 The 2020 new updated permium training pants are made of natural and safe cotton. Outer layer is 100% cotton, inner layers are cotton+muslin+TPU, increasing maximum softness and the absorption of urine. The soft touch and natural warmth feeling can make baby move freely and enjoy potty training. 【Strong Urine Absorption】This training underwear with thick layers have strong urine absorption which will help to avoid leakage and give enough time for parents to help change the training pants for their baby. It is recommended to wash in water before wearing to maximize its effectiveness. 【Leakproof 6-layer structure】 The baby training pants are 6-layer structure , so they can absorb more moisture. If your baby takes a nap or sucks a small amount of urine, it won't leak, you don't have to worry about the mattress or bedding. Extra padding in the front and back makes them more absorbent than normal underwear. 【Covered Elastic】: Comfy stretch waistband and leg hole for greater fit and ease of pulling up and down. Washable and reusable design save you tons of money from disposable diapers. 【Size for Potty Training Pants】 12M (waist 12.6in / 32cm, height 29.5in / 75cm, weight 22.5-24.5lbs / 10.2-11.1kg), 2T (waist 13.4in / 34cm, height 33.5in / 85.1cm, weight 24.3-26.5lbs / 11-12kg), 3T (waist 14.2in / 36.1cm, height 37.4 in/ 95cm, weight 26.5-30.9lbs / 12-14kg), 4T (waist 15in / 38.1cm, height 41.3in / 105cm, weight 33.1-37.5lbs / 15-17kg), 5T (waist 15.8inches / 40cm,height 45.2in / 115cm, weight 37.5-42.6lbs / 17-19.3kg).