THERMOS

THERMOS JED-400

Name: THERMOS JED-400
Brand: THERMOS

The pressure-relieving click-open lid solves a common hot-jar frustration. Its 400 ml stainless vessel rates at least 60°C after six hours, and every component is dishwasher-safe.

$19 typical

Check availability

EDITION 01RESEARCHED 2026-09-113 SOURCESREFRESH DUE 2027-03

SUBSTANCE SCORES

substance8.9/ 10

design9.0/ 10

value8.9/ 10

WHY THE PRICE IS JUSTIFIED

At roughly ¥2,770 it delivers independently corroborated six-hour 60°C-plus performance and unusually thorough cleanability: all parts are dishwasher-safe, while the click-open mechanism addresses pressure lock.

MATERIALS

BodyStainless steel with polyester-resin coating

Vacuum-insulated, impact-resistant food vessel.

Lid assemblyPolypropylene

Heat-tolerant, lightweight structure for the opening mechanism.

GasketsSilicone rubber

Provides a replaceable leak-resistant seal.

CRITERIA

9/10

Build Quality

Stainless vacuum vessel with removable silicone seals and dishwasher-safe components.

9/10

Performance

Official 6-hour rating: at least 60°C hot and 11°C or below cold; independent comparison praised eating ergonomics.

10/10

Value

Low Japan-market price for this level of thermal and cleaning engineering.

IDEAL FOR

·Daily commuter lunch
·Chunky soups and oden
·Dishwasher users

NOT FOR

·Microwave use
·Very large servings

DESIGN & ERGONOMICS

The gently rounded rim is comfortable to sip from; the click-open lid makes a hot jar less fussy to open and drainage details improve drying after washing.