Summit Flex Training T-Shirt ~ Spruce • Aspinwall Mountain Wear

Men’s Summit Flex Training Shirt

Built for the mountain athlete who trains as hard as he hunts.

The Summit Flex is Aspinwall’s answer to the everyday performance shirt — our take on premium Dry-Fit engineered specifically for the fitness journey of hikers, bowhunters, lifters, and cross-fitters. Whether you’re putting in miles on the trail, grinding in the gym, or chasing elevation, this shirt moves with you and recovers fast so you stay comfortable when it counts.

Key Features:

• Maximum stretch & recovery — 4-way stretch fabric that moves with every rep, stride, or pack-out without losing shape.

• Matte technical face — No shiny “gym rat” look. Clean, low-profile finish that looks as good post-workout as it does pre-hunt.

• Superior moisture management — Pulls sweat away from the body, dries lightning fast, and helps regulate temperature during high-output efforts.

• Soft hand feel — 90% Polyester / 10% Spandex blend that feels broken-in from the first wear.

Signature Detail: Features our Mountain Pass logo subtly placed in silicon grey on the left collarbone.

Whether you’re training for your next backcountry trip or just living an active life in the mountains, the Summit Flex delivers the performance you need without the flashy, restrictive feel of lesser shirts.

Ready for the mountains. Built for the journeyman.

The best way to fit our shirts is take one of your existing shirts and compare it to these measurements. See Image for reference.

Front Body Length: With the shirt laid flat, measure from the top of the shirt (collar seam) to the bottom hem of the shirt.

Chest Width: Shirt laid flat, measure across the body of the shirt 1" under the bottom of the armpit seam.

Sleeve Opening: Shirt laid flat, measure the distance of the opening of the end of the sleeve.

Bottom Sweep: With the shirt laid flat, measure the distance along the bottom of the hem of the shirt.

These are our Original T-Shirt Measurements + or - 1/4" tolerance:

Mens Cut	Ideally Fit For	Front Body Length	Chest Width	Sleeve Opening	Bottom Sweep
Small	Men 5' 3" - 5' 7" and weighing 110-140 lbs	27"	17.25"	6.25"	17.5"
Medium	Men 5' 6" - 5' 10" and weighing 140-170 lbs	28"	18.75"	6.5"	19.5"
Large	Men 5' 9" - 6'1" and weighing 170 lbs - 210 lbs	29"	20"	6.75"	21.5"
XL	Men 5'11" - 6' 4" and weighing 210 lbs - 250 lbs	30"	23"	7"	23.5"
XXL	Men 6' - 6' 5" and weighing 250 lbs - 280 lbs	31"	25"	7.25"	25.5"