TG230 Double-Wall Glasses

• Double-Wall Design
  two walls of clear borosilicate glass keep hot drinks hot and cold drinks cold for longer, with a comfortable, condensation-free hold and a floating-drink look
• 230mL Capacity
  a set of two stemless, handle-less tumblers sized for coffee, tea, water, or juice
• Thermal Shock Resistant
  withstands temperature changes from −20°C to 150°C, from iced pours to freshly brewed coffee
• Thermal Insulation
  the double-wall air gap holds temperature longer, keeping hot drinks hot and cold drinks cold
• Heavier Borosilicate Build
  up to 30% heavier for a substantial, solid feel with enhanced durability and stability
• Precisely Welded Rim
  a precisely welded rim creates a thinner, refined edge for a cleaner drinking experience
• BPA Free
  made from chemical-free material for everyday use

In the box

• 2× TG230 double-wall glasses (230mL each) — set of 2

Designs protected by Feller. Registered in Germany, EU countries, and elsewhere.

Double-Wall Borosilicate Glass
two clear walls of borosilicate glass with an insulating air gap between them keep hot drinks hot and cold drinks cold for longer, while the outer wall stays comfortable to hold and free of condensation

Heavier Borosilicate Build
the glass is built up to 30% heavier than a standard double-wall glass, for a substantial, solid feel in the hand with enhanced durability and stability

Precisely Welded Rim
a precisely welded rim creates a thinner, refined edge compared to standard double-wall glasses, for added elegance and a cleaner drinking experience

Stemless, Handle-Less Form
a clean stemless tumbler with no handle, slightly tapered and wider at the rim, that suits coffee, tea, water, or juice

Thermal Shock Resistant
the borosilicate build withstands temperature changes from −20°C to 150°C, so it handles iced drinks and freshly brewed coffee alike

BPA Free
made from chemical-free material for everyday use

The hero of the series. A double-wall glass is, on its own, a category baseline — every one keeps drinks hot or cold and looks like the drink is floating. What sets the Feller Double-Wall Glass Series apart is how it is built: a precisely welded, thinner rim and a noticeably heavier borosilicate body, engineered beyond a standard double-wall glass.

Precisely Welded Rim Design
the two glass walls are precisely welded at the rim to create a thinner, refined edge compared to standard double-wall glasses, for added elegance and a cleaner feel against the lip

Heavier Borosilicate Build (+30%)
built up to 30% heavier than a standard double-wall glass, the borosilicate body delivers a substantial, solid feel with enhanced durability and stability

Reliable Thermal Insulation
the welded double-wall construction holds an insulating air gap that keeps hot drinks hot and cold drinks cold for longer, while the outer surface stays comfortable to hold

Refined Drinking Experience
the combination of a thinner welded rim and a heavier, steadier body is what makes the glass feel considered in the hand, sip after sip

Made for Everyday Drinks
at 230mL the pair suits coffee, tea, water, and juice, the stemless, handle-less form sitting comfortably in the hand and on the table

Hot and Cold, Both at Home
the double-wall build keeps a hot drink hot and a cold drink cold for longer while the outside stays comfortable to hold, so it works year-round

Hand Washing Recommended
to protect the precisely welded rim and the clarity of the glass, gentle hand washing is recommended *(guidance only — the box does not state dishwasher or microwave suitability; see Open flags)*

Handle With Everyday Care
double-wall glass is durable for daily use and thermal-shock resistant from −20°C to 150°C, but like all glassware it should not be subjected to sudden, extreme temperature swings beyond that range