• UPPERS: Abrasion resistant mesh with injected PU and microfibre. Integrated tongue in the upper. TPU at the heel for lateral stability.
• LINING: PU Air Net for ventilation and comfort
• MIDSOLE: Shock absorbing EVA layer for improved comfort
• SOLE: Vibram Ttrail. Rubber sole with integrated toecap and dual density EVA rand for optimum comfort. TPU piece for support and stability. Megagrip compound for superior grip. Boreal's patented ITR construction system to provide excellent durability prevent delamination at the toe.
• USAGE: Perfect for trail running,orienteering, light approach or street use
• WEIGHT: 615 gr. pair. Size 4 U.K.
  
  DROP: Drop 10mm

Features

• The upper is constructed from lightweight and supple synthetic mesh and microfiber, with an injected PU overlay for added support and protection. The side panels around the flex point are made using a panel of a special extra tough textile for maximum durability in this key wear zone. 

  Inside, our PU AirNet lining ensures great comfort and breathability, and the one-piece integrated tongue design gives this shoe a superb sock-like, foot-wrapping fit.

  Underfoot, dual density EVA provides outstanding cushioning without excessive stack height or weight, and TPU inserts have been added to provide added underfoot support and protection over rough, uneven ground.

• The Vibram Trail outsole features our innovative and patented ITR (Integrated Toe Rand) construction. With ITR the sole unit and toe cap is made in one piece without any glued join, thus eliminating any potential for toe cap delamination; an issue commonly found on running shoes. 

  The aggressively lugged tread in the sticky Vibram Megagrip rubber compound provides superior grip on a wide variety of surfaces.

  Viper is perfect for trail running, orienteering and fast approaches.