These are cylindrical refill polyethylene bags that can be used with Aprica's Niowanakute Poi, Nioi Poi, Deopot, Combi's Poitech, Smart Poi, Kururun Poi, Nappy Pail, and Sangenic. You can use them in the same way by gathering the cylindrical polyethylene and refilling the used cassette/cartridge. The genuine product for Niowanakute Poi is about 8m, but it is 5.5m for easier refilling. For refilling instructions, please see http://youtu.be/wswSPoLYz4s. You will be able to refill easily once you get used to it. Products that can be refilled: ・Niowanakute Poi ・Nioi Poi ・Deopot ・Poitech/Advance/Poi-Tech※ ・Smart Poi ・Kururun Poi/Nioi Kururun Poi※ ・Nappy Pail ・Sangenic※ Other cartridges can be used if the diameter is about 17cm. ※For Nioi Kururun Poi, Poitech, and Sangenic, the new "Poitech Series Common Spare Cassette" is easier to refill than the old type cartridges. Details: Length: Approximately 5.5m Thickness: 0.02mm Material: Polyethylene, Made in Japan About Purchase: ・Immediate purchase is possible. ・No need to comment before purchase, and no need to comment after purchase/evaluation. About Price: ・Shipping fee is 190 yen (the difference is a service) ・130 yen per sheet. About Shipping: ・Basically, we will ship the next day via Yu-Packet Post for purchases made by 9 pm. ・For purchases after 9 pm, we will ship the day after tomorrow as the next day's order. ・We cannot respond to messages during the day, so we will reply when shipping. Notes: ・The cylindrical polyethylene is new and unused, but please understand that there may be some wrinkles and dust due to folding for shipping. Other: ・I am also raising children, and I have been using it in my living room for over 7 years, and I have not been concerned about the smell. ・We handle polyethylene bags, so we have multiple in stock. ・We have a track record since 2013 on the previous account and have received high praise from many people. Thank you.