Child seat cushion for bicycles B403562 P6324 FBP-IC BL Unused. I didn't need it when I bought my electric assist bicycle because my child was already over 100cm tall and of a sturdy build. Only tried it on, and it's been unused since. (Tried it on only, but please understand that it's non-refundable and non-returnable) (We are a somewhat fastidious household, so I believe it has been stored quite hygienically) This cushion is essential for 1-year-olds and slender 2-year-olds. It's a genuine product for the Bridgestone Bikke series, but it has a simple structure, so I think it can be used on Yamaha and Panasonic bicycles, and on rear seats as well. Use it as a spare for when it gets wet on a rainy day, or in case of a potty accident!