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Master Series

Unrivaled Performance

  • Resets the industry standard for thermal retention & durability
  • For the pros pro, those who demand the very best
  • New state-of-the-art vacuum technology
  • Strongest design, thicker steel
STANLEY master vacuum bottle 1.4qt
STANLEY master series coffee
STANLEY master vacuum bottle 1.4qt

Master Vacuum Bottle | 1.4 Qt


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STANLEY master vacuum bottle 25oz

Master Vacuum Bottle | 25 oz


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STANLEY master vacuum mug

Master Vacuum Mug | 18 oz


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Master Series

Leader in Durability & Thermal Retention

Quadvac insulation
keeps drinks hot 40 hours, cold 35 hours, or iced 160 hours
1.0mm 18/8 thick stainless steel
throughout the body and base cap — the strongest out there by far. 50-100% thicker than our leading competitors. Rust-proof + naturally bpa-free
Additional wall gap in vacuum bodies
60% wider than our leading competitors
Steel-lined stopper
no plastic contact for contents
Vacuum insulated 18/8 stainless steel cup
keeps coffee hot 20 minutes. 0.7mm thick steel — 40%-75% thicker than our leading competitors
Robust steel handle
with molded silicone grip for comfort. Extra robust engineering on all components and joints
STANLEY master series thermos exploded view

Quadvac Locks in Heat or Cold Better Than Any Other Technology Out There

Introducing our state-of-the-art quadvac technology

STANLEY master series thermal retention chart
  • Adds a double layer barrier to double wall vacuum insulation
  • Four layers of protection from convective, conductive and radiant energy transfers
STANLEY master series quadvac logo
STANLEY master series lunch at work
STANLEY master series thermos


For the pro's pro, the toughest of the tough and those who demand the very best, our Master Series offers unrivaled durability and thermal retention. A ventury of know how meets state of the art design in every detail.

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STANLEY thermos silhouette