Flamestretch® Uni (FR)

Designed for cold-water rescue divers, the Flamestretch FR Uni offers ultra-soft, full-body warmth and critical FR protection with its Nomex® brand fiber.

Lightweight, breathable, and extremely stretchy, this comfortable union suit is ideal for all cold weather conditions that demand seamless warmth from head to toe. Contoured sleeves feature a thumb slit for extra protection and easy layering. Great for use under a dry suit, flight suit, or Massif® outer shell garments. Specifically designed for Coast Guard, SAR, and other situations involving a dry suit and flame and arc hazards.

Massif Flamestretch® is constructed with DuPont™ Nomex® brand fiber. Engineered with Massif's proprietary knitting and finishing technology, Flamestretch provides built-in flame resistance, proven durable performance, and comfort from the inside out.

  • Full flame-resistant construction with proprietary Massif® fabrics
  • Extreme 4-way stretch allows for performance fit
  • High warmth-to-weight ratio and compressibility for easy packing
  • Breathable fabric is ultrasoft and comfortable next to skin
  • Excellent moisture management for multi-season use
  • Thumb loops for easy donning with a dry suit, coverall or Elements™ Jacket
  • Two-way center-front zipper for easy donning and convenient fly opening
  • Part of the Massif® Fire and Ice™ layering system
  • All fabrics pass the stringent ASTM D6413/F2302 performance specification for flame resistance.
Men's Sizing Information (inches)
XS S M L XL XXL XXXL
NECK 13-13.5 14-14.5 15-15.5 16-16.5 17-17.5 18-18.5 19-19.5
CHEST 30-33 34-37 38-41 42-45 46-49 50-53 54-57
CENTERBACK ARM - short 29.5-30.5 30.5-31.5 31.5-32 32-33 33-33.5 33.5-34.5 34.5-35
CENTERBACK ARM - regular 31-32 32-33 33-33.5 33.5-34.5 34.5-35 35-36 36-36.5
CENTERBACK ARM - long 32.5-33.5 33.5-34.5 34.5-35 35-36 36-36.5 36.5-37.5 37.5-38
WAIST 25-27 28-31 32-35 36-39 40-44 45-49 50-56
INSEAM - short 30 30 30 30 30 30 30
INSEAM - regular 32 32 32 32 32 32 32
INSEAM - long 34 34 34 34 34 34 34

All measurements are in inches. The measurements provided refer to body size, not to garment dimensions. Size up if you are between measurements. Inseam will vary depending on the style; unless otherwise noted, they will match the chart above. Refer to the Measurement Guide for instructions on how to find your measurements.

Men's Sizing Information (centimeters)
XS S M L XL XXL XXXL
NECK 34 36 38 40 44 46 48
CHEST 84 94 104 114 124 134 144
CENTERBACK ARM - short 76 78 80 82 84 86 88
CENTERBACK ARM - regular 80 82 84 86 88 90 92
CENTERBACK ARM - long 84 88 92 96 100 104 108
WAIST 64 74 84 94 109 119 135
INSEAM - short 76 76 76 76 76 76 76
INSEAM - regular 81 81 81 81 81 81 81
INSEAM - long 86 86 86 86 86 86 86

All measurements are in centimeters. The measurements provided refer to body size, not to garment dimensions. Size up if you are between measurements. Inseam will vary depending on the style; unless otherwise noted, they will match the chart above. Refer to the Measurement Guide for instructions on how to find your measurements.

Women's Sizing Information (inches)
XS S M L XL XXL XXXL
NECK 12.5-13 13-13.5 13.5-14 14-14.5 15-15.5 16-16.5 17-17.5
CHEST 32-33 34-35 36-37 38-41 42-44 45-48 49-52
CENTERBACK ARM - short 28.75 29 29.25 29.5 29.75 30 31.25
CENTERBACK ARM - regular 30.25 30.5 30.75 31 31.25 31.5 32.75
CENTERBACK ARM - long 31.75 32 32.25 32.5 32.75 33 34.25
WAIST 26-27 28 29-31 32-35 36-39 40-42 43-45
INSEAM - short 30 30 30 30 30 30 30
INSEAM - regular 32 32 32 32 32 32 32
INSEAM - long 34 34 34 34 34 34 34

All measurements are in inches. The measurements provided refer to body size, not to garment dimensions. Size up if you are between measurements. Inseam will vary depending on the style; unless otherwise noted, they will match the chart above. Refer to the Measurement Guide for instructions on how to find your measurements.

Women's Sizing Information (centimeters)
XS S M L XL XXL XXXL
NECK 31-33 34 35 36 38-39 40-42 43-45
CHEST 81-84 86-89 91-94 96-104 106-112 114-122 125-132
CENTERBACK ARM - short 73 73.5 74 75 75.5 76 78
CENTERBACK ARM - regular 76.5 77.5 78 79 79.5 80 82
CENTERBACK ARM - long 80.5 81 82 82.5 83 84 86
WAIST 66-68 71 73-79 81-89 91-99 101-106 109-114
INSEAM - short 76 76 76 76 76 76 76
INSEAM - regular 81 81 81 81 81 81 81
INSEAM - long 86 86 86 86 86 86 86

All measurements are in centimeters. The measurements provided refer to body size, not to garment dimensions. Size up if you are between measurements. Inseam will vary depending on the style; unless otherwise noted, they will match the chart above. Refer to the Measurement Guide for instructions on how to find your measurements.

Glove Sizing Information
XXS/5 XS/6 S/7 M/8 L/9 XL/10 2XL/11 3XL/12 4XL/13
Hand Width - inches 6.5 7 7.5 8 8.5 8.75 9 9.5 10
Hand Width - cm 17 18 19 20 21 22 23 24 25
Hand Length - inches 7 7.75 8 8.5 9.25 9.5 9.75 10 10.25
Hand Length - cm 18 20 21 22 24 24.5 25 25.5 26

The measurements provided refer to body size, not to garment dimensions. Size up if you are between measurements. For Hand Width measure around the widest part of the palm above the thumb. For Hand Length measure from the top of the middle finger straight down to the wrist joint.

Headwear Sizing Information
S/M L/X
Head Circumference - inches 21-23 23-25
Head Circumference - cm 53-58 58-63

The measurements provided refer to body size, not to garment dimensions. Size up if you are between measurements. For Head Circumference measure around the head above the ear.

Measurement Guide

Take your measurements over your basic undergarments normally worn. Stand erect without shoes with your feet shoulder width apart. For circumference measurements, make sure to keep the tape measure parallel to the floor.

Find your measurements following the directions below and refer to the size chart to determine the size to order. Do not size up or down. Our garments are designed to fit according to the specified end use and take into account other layering requirements.