Sierra flex S3

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Sizes: 38-48 (5-13)

Manufacturer: MTS® (France), series «M-CLIMBER»

Upper: water resistant cow nubuck full leather

Lining: poromax® brown colour and MTS marking

Tongue: waterproof bellows tongue in leather lined in Poromax® and padded

Ankle protection: black leather on 10mm thick foam

Toe cap: ultralight and extra wide Composite 200 joules LIGHT SYSTEM®

Midsole: fLEX SYSTEM®, anti-magnetic and thermal insulated

Insole: foamed PU, anatomical, antistatic and anti bacterial

Sole: PU/TPU multi-hardness EXTREM 4 outsole,Oil resistant, antistatic, HI-CI

    Features of the model:
  • Lining offering high absorptive and desorptive capacities and thermal insulation thanks to an air layer. Provides a cool and dry feel
  • Ankle protection
  • Quick lacing
  • Height boots 17 cm
  • Suitable for everyday wear
  • Water absorption and penetration resistance of upper


Suitable for: Inside/Outside
Ideal for: Construction and civil engineering, oil drilling and related industries, work in cold climates, forestry, agriculture and the environment


EN ISO 20345:2007 SRC
GOST 28507-90

Sierra flex S3