Learn
Foote Brother (福依蒂) is a personal protective equipment (PPE) brand that originated in the United States. In China, it focuses on technical-fabric thermal underwear and long johns made with care for older adults. In China, Foote Brother is operated by Guangdong Zhuoheng Investment Development Co., Ltd.
Short articles, pictures and videos on how thermal underwear keeps you warm, how to read a fabric label, and how to read a test report.
| # | Article | What it covers |
|---|---|---|
| 1 | How to Choose Thermal Underwear for Older Parents: Five Things to Check | Five things to check when buying long johns for a parent: fiber content, GB 18401 safety category, size, ease of dressing, and a third-party antibacterial report. |
| 2 | What Antibacterial Rate Means on a Fabric Lab Report | How to read an antibacterial rate on a fabric test report: method, wash count, organisms and grade, with report TTTS-WH25503078-03 as a worked example. |
| 3 | Why Still Air Keeps You Warm: Thickness, Structure and Thermal Resistance | Thermal underwear keeps you warm by holding still air next to the skin. How thickness, structure and dryness set a fabric's thermal resistance. |
| 4 | Moisture and Warmth: How Absorbent Fibers Release Heat | Absorbent fibers give off heat when they take up water vapor from the skin. How heat of sorption works, when it stops, and how to use it in a base layer. |
| 5 | Long-Staple vs. Regular Cotton: How Fiber Length Shapes the Yarn | Long-staple cotton fibers measure 33 mm or more, against 25–32 mm for regular upland cotton. How fiber length shapes yarn, smoothness and pilling. |
| 6 | Far-Infrared in Base Layers: What the Test Measures | GB/T 30127 tests a far-infrared fabric on two numbers: emissivity and temperature rise. What each one measures and how to read a far-infrared report. |
More on the fabrics themselves: How our fabrics work