Pigeon's slim-type glass baby bottle. With S-sized round hole nipple (can be used from 0 months). Made of heat-resistant glass that cools quickly and is hygienic, as it is scratch-resistant. I bought it thinking it would be safer than plastic ones for newborns, but I didn't use it because I exclusively breastfed. I bought it new at Nishimatsuya, but it's unopened because I never used it.