Toyo Sasaki USURAI On The Rock Glasses - 355ml - 2-Piece

Toyo Sasaki USURAI On The Rock Glasses - 355ml - 2-Piece

The Toyo Sasaki USURAI On The Rock Glass embodies the quiet refinement of Japanese glassmaking. Named after usurai — the thin ice that forms on water in early winter — the glass is blown remarkably thin, its fine rim letting whisky, shochu, and cocktails flow naturally onto the palate.

Despite its thinness, the glass is remarkably strong — the surface is ion-strengthened using Toyo Sasaki's HS (Hard Strong) treatment, making it far more resistant to chipping and breakage than conventional glass. The wide cylindrical mouth and 355ml capacity leave plenty of room for large ice cubes, well suited to whisky on the rocks, highballs, and long drinks. Supplied as a pair.

What's Included

• 2 x Toyo Sasaki USURAI On The Rock Glass - 355ml

Key Features

• Ultra-Thin Rim: The thin-walled design delivers a clean, delicate mouthfeel and a lightweight hold.
• HS Ion-Strengthened Glass: Ion-strengthened for superior resistance to chipping and breakage — thin, but strong.
• Room for Large Ice: The 355ml capacity and low, wide form take large ice cubes and fruit garnishes with ease.
• Wide Cylindrical Mouth: Easy to pour into, easy to clean, and versatile enough for cocktails, soft drinks, and desserts.

Care Instructions

• Dishwasher safe; handle the thin rim with care when washing and stacking.
• Not suitable for use in a microwave or oven.
• Avoid sudden temperature changes — do not pour boiling liquid into a cold glass.
• Avoid abrasive scrubbers and harsh detergents.

About Toyo Sasaki Glass

Toyo Sasaki Glass is one of Japan's most respected glassware manufacturers, formed from the merger of two historic glassmakers with roots stretching back to 1878. Renowned for combining traditional Japanese glassmaking artistry with advanced manufacturing technology — including their proprietary HS ion-strengthening treatment — Toyo Sasaki produces glassware that balances delicacy, durability, and everyday practicality.

Specifications