Focus V：IC玻璃製可冷凍乾式頂蓋（藍色）

First time using a freezable glycerin piece, and the difference is night and day—hits stay smooth even after back-to-back sessions. The blue glass looks great on the rig too.

The glycerine core stays genuinely cold through a whole session, and the blue glass looks sharp sitting on the unit. I packed it in the freezer for twenty minutes and the first pull was noticeably smoother on my throat than the stock setup.

I was skeptical about freezing the glycerine core, but it really does keep my hits cool for almost the whole session without any harshness. The blue glass looks sharp on my device too.