Minimum Specifications:

- Main material: flame-resistant, tear-resistant, waterproof, windproof, insulating. 3-in-1 composite: woven outer, PTFE membrane middle, knitted fleece inner.
- Flame-resistant sewing thread
- Large pockets on both sides of torso
- Flame-resistant hook-and-loop adjustable cuffs
- Flame-resistant knitted thumb loops inside cuffs
- 1 pocket per arm (2 total), closed with flame-resistant zippers
- Flame-resistant hook-and-loop areas on both arms for patches, each with 1 pen pocket (2 total)

Material & Standard Requirements:

3-in-1 Composite Outer Layer Material: 98% meta-aramid, 2% conductive fiber; Weight: 210 g/m² (±10 g), woven structure

- Flame Resistance (ISO 15025:2016)
    - Afterflame time - warp (s): 0 s; weft (s): 0 s
    - Damage length - warp ≤ 30 mm; weft ≤ 30 mm
  - Thermal stability - warp ≤ 1%; weft ≤ 1%
- Water Resistance (EN ISO 4920:2012): ≥ Grade 4
- Tensile Strength (EN ISO 13934-1:2013, before washing):
    - Warp ≥ 1200 N; Weft ≥ 1000 N
- Tear Strength (EN ISO 13937-1:2000, before washing):
    - Warp ≥ 230 N; Weft ≥ 150 N
- Colorfastness: Washing ≥4, Water rubbing ≥4, Light ≥4

3-in-1 Composite Middle Layer Material: 100% PTFE

3-in-1 Composite Inner Layer Material: 70% flame-resistant acrylic, 30% cotton; Weight: 340 g/m² (±5%), woven structure

- Flame Resistance (ISO 15025:2016)
    - Afterflame time - warp (s) ≤ 4 s; weft (s) ≤ 4 s
    - Damage length - warp ≤ 150 mm; weft ≤ 150 mm

• Collar and Hem Adjustment Hook Material: 100% carbon fiber
  - Zipper Base Material: 100% meta-aramid
  - Zipper Teeth Material: Copper