Sub-Zero Spark 14mm Freezable Glycerin Glass Bowl

The Sub-Zero Spark is a 14mm glass bowl that actually stays cold without the ice-catcher hassle. It's got glycerin sealed inside the double walls that freezes solid and keeps your hits smooth and chilled for about an hour. Throw it in the freezer for 45 to 60 minutes and you're set. The borosilicate glass is thick enough to handle the temperature swings, and there's a built-in glass screen so you don't have to deal with debris in your water pipe.

Highlights:

• Freezable glycerin core stays liquid when frozen, no cracking
• Rapid heat removal for smooth, cool hits
• One hour of cold performance per freeze cycle
• 14mm joint size fits most standard water pipes
• Built-in multi-hole glass screen prevents debris
• Thick borosilicate glass construction
• No ice refills needed during your session

If you're tired of constantly adding ice to your water pipe, this bowl cuts out that step entirely. Just freeze it and go.