Facts

Cut: High cut
Price: $315
Waterproofing: Waterproof
Weight: Men: 26.5oz
Width: Men: Normal | Women: Normal
Brand: Millet
Material: Vibram
Technology: Gore-Tex
Colorways: Multi
Size
Small True to size Large
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  • The brand’s engineers equipped the Grepon 4S GTX with features needed to deliver precision and protection during high-alpine pursuits. The boot’s Gore-Tex-lined 3D mesh polyester upper wards off trail debris and wet elements.
  • Underfoot, it employs an EVA midsole and a Vibram outsole. The former dissipates shock from ground impacts, while the latter renders grip on various terrain types.

This men’s-only mountaineering boot from Millet is manufactured in standard (D) width. It is offered in whole and half sizes. Generally, it runs true to size. The brand also noted that it has a slim toe box. Its lacing system has an automatic lock near the ankle area which enables users to customize tension at the instep and the boot’s shaft.

Millet designers equipped the Grepon 4S GTX with a Vibram Mulaz EVO outsole. Its sturdy profile yields surefootedness on various types of terrain. The clover-like boots at the center provide multidirectional traction. The aggressive lugs at the perimeter create a stable ride while the heel brake enhances the stopping power of the sole.

The Grepon 4S GTX is equipped with an ethylene-vinyl acetate (EVA) midsole for cushioning. It also helps maintain the user’s connection to the ground for a more dynamic response. A crampon-compatible EVA insert is placed at the rearfoot to maximize shock absorption upon heel strike.

The trademarked AFC structure keeps a secure hold of the heel. It prevents heel slippage without limiting the natural movement of the foot.

This high-cut mountaineering boot features a 3D mesh polyester (100% PES) in its upper. This durable material is paired with a Gore-Tex lining inside for water protection and ventilation. Duratherm insulation is incorporated into the laminate to retain heat even in very low temperatures.

Additionally, the PU overlays help maintain the boot’s structure. An abrasion-resistant rubber rand partially wraps the lower part of the boot for added durability.

In the ankle area is a Lycra fabric which allows the foot to flex comfortably. Combination eyelets with a synthetic lace allow for fit management while the pull strap at the heel assists in donning and doffing.

  • This Millet footgear is compatible with hybrid crampons.

Comparison