I used this for a total of about 4 hours over two days during a summer trip. I washed and stored it, but I'm selling it because I bought a new child seat and no longer need it! I purchased it on Amazon for 1480 yen. It can be securely fastened with Velcro and two buckles, preventing escape. I look forward to purchases from those who understand that this is a home-stored item. ☺︎