REI Men's Sizes S M L XL XXL
Neck 14.5 15.5 16.5 17.5 18.5
Chest 35-37 38-40 41-43 44-47 48-51
Waist 28-30 31-33 34-36 37-40 41-44
Hips 35-37 38-40 41-43 44-46 47-49
Sleeve 33 34 35 35.5 36
Inseam 31.5 32 32.5 33 33.5

REI Men's Extended Sizes 3XL 4XL
Neck 19.5 20.5
Chest 52-55 56-59
Waist 45-48 49-52
Hips 51-54 55-58
Sleeve Length 36.5 37.5

REI Adult Hat Sizes S M L XL
  6 7/8-7 7 1/8-7 1/4 7 3/8-7 1/2 7 5/8-7 3/4
Head Circumference 21.5-22 22-22.75 22.75-23.5 23.5-24.25

REI Adult Glove and Mitt Sizes XS S M L XL
Knuckle Circumference (in.) 6 - 6.5 7 - 7.5 8 - 8.5 9 - 9.5 9.5 +
Hand Length (in.) 5 - 5.5 6 - 6.5 7 - 7.5 8 - 8.5 9 - 9.5

REI Sock Sizes M L XL
Men's Shoe Sizes 5-8.5 9-12 13-15

Shoe Size Conversion Estimate-European to US 38 39 40 41 42 43 44 45 46 47 48 49 50
Men 5-5.5 6-6.5 7-7.5 8-8.5 8.5-9 9.5 10 10.5 11-11.5 12 12.5 13 13.5

Taking Measurements:

Note:Pant styles where inseam length is part of the name (ex. REI Adventures Pants – Men’s 30" Inseam) have the same inseam length for all waist sizes. Regular: 5'8" - 6'0" Tall: 6'1" - 6'3" Men's Sizes--Tall: These sizes are available in some shirts, underwear and outerwear. Generally it means 2" longer in the body of a shirt, top or jacket; 2.5" longer in parka; 1.5" longer in sleeve length; 2.5" longer in inseam, Front & Back Rise 0.5" longer for a total of/or 1" longer in the total rise.

Measurements stated in inches unless otherwise indicated.

MEASURING TIPS FOR CLOTHING
Neck:Measure around the base of your neck. Or, simply find a collared shirt that fits you well. Lay the collar flat, and measure from the middle of the collar button around to the far end of the button hole.
Chest:Keeping your arms relaxed at your sides, measure under your arms at your armpits. Include the highest part of your chest and shoulder blades.
Sleeve:With arm relaxed at side and slightly bent, measure from the center back, across shoulder to elbow, and down to the wrist.
Waist:Measure at your natural waistline, where your belt normally rests.
Hips:Standing with your feet together, measure around the fullest part of your seat.
Inseam:Take a pair of pants that fit you well and measure along the seam from the crotch to the bottom of the leg.
Hand (for gloves):To measure knuckle circumference, keep your hand flat and measure around your large knuckles. Do not include your thumb. To measure hand length, measure from the base of your palm to the end of your middle finger.
Head (for hats & helmets):Measure around the largest part of your head, just above the brow.