I'm selling these because my child suddenly potty-trained and I no longer need them. Below is a copy of the product description: These are semi-transparent, high-density polyethylene bags that are less likely to let odors escape compared to transparent low-density polyethylene bags. These are refill garbage bags that can be used as a substitute for cartridges and cassettes in diaper-specific and pet-specific trash cans such as Poitec, Smart Poi (Combi), Nioi Poi/Niowanakute Poi (Aprica), Kururun Poi, Deopot, Nappy Pail, Sanigenic, Litter Locker II, and Pad Locker. These garbage bags can be used as a substitute for cartridges and cassettes in diaper trash cans, even for products not listed above, if the diameter of the cartridge or cassette is approximately 17cm. Although the garbage bags do not have an odor-proof function, I used them for 3 years under the bathroom sink and did not notice any odors. We have sold over 5000 sets! We are grateful for the positive feedback we have received, and we are thankful for the increasing number of repeat customers who repurchase. 【Product Details】 ・Width: 28cm ・Length: 5m ・Thickness: 0.02mm ・Material: High-density polyethylene, made in Japan ・Color: Semi-transparent 【Price】From the items listed on 2022/06/19 ・130 yen / 1 bag 【How to Use】 Please refer to the photos. It takes a little practice, but you'll be able to do it in 1 or 2 minutes once you get used to it. ① Prepare the used cartridge. ② Gather the cylindrical bag from the end and make it into a donut shape. ③ Attach the donut-shaped bag to the cartridge and tie the end of the bag. ④ Set the cartridge in the diaper-specific trash can, and you're done. 【Notes】 ・These are not genuine products. ・These are unused polyethylene bags. ・Only the polyethylene bags are sold; the diaper-specific trash can, cassette, and cartridge are not included. ・Please note that there may be some wrinkles or dust. ・Keep out of reach of children as there is a risk of suffocation.