





The Fieldsheer Bluetooth-Enabled Primer heated baselayer shirt is designed for the outdoor enthusiast. From skiing, hunting, hiking to running or just working outdoors, the Primer Shirt complements your outerwear to keep a warm core. Its moisture-wicking, warmth, and stretch features make it a versatile heated baselayer in the winter, or a standalone shirt during outdoor activities in the Spring and Fall. The Primer is made from a 4-way stretch anti-microbial polyester-spandex blend that provides a comfortable next-to-skin feel. Flat-lock seams, moisture-wicking mesh liner, and side-stretch panels conform to your body and allow for maximum body movement. The Primer heated baselayer has integrated, concealed heating panels powered by sturdy yet lightweight 7.4-volt Mobile Warming heating system. The 7.4-volt system has 3 heating elements, one on the back and 2 on the chest, that add heat to critical areas that keeps your core warm for hours. The Primer's 7.4-volt heating system can provide temperatures ranging from 135F on high to 90F on low. On high, expect 2.5 hours of heat, and on low, the Primer can provide heat for up to 10 hours! The Primer has 2 ways to adjust the temperature. First, the built-in touch control button. With a simple button push, you can select from 4 heat settings. Second, we've incorporated Bluetooth control with our MW Connect app. Through the MW Connect app, you can quickly toggle through all connected Mobile Warming devices and adjust individual heat levels to your liking. MW Connect allows you to get real-time updates on battery levels and update your garments when new firmware becomes available. All day, any weather. The Primer heated baselayer shirt is a versatile insulating layer that keeps you warm all winter long.
Size Guide
| Size | XS | S | M | L | XL | XXL | 3XL | 4XL |
|---|---|---|---|---|---|---|---|---|
| Chest | 36" | 38" | 40" | 42" | 44" | 48" | 51" | 54" |
| Waist | 29.5" | 31.5" | 33.5" | 35.5" | 37.5" | 41.5" | 44.5" | 47.5" |
| Sleeve | 25" | 25.5" | 26" | 26.5" | 27" | 27.5" | 27.5" | 28" |
| Size | XS | S | M | L | XL | XXL | 3XL | 4XL |
|---|---|---|---|---|---|---|---|---|
| Waist | 30" | 32" | 34" | 36" | 38" | 40" | 42" | 44" |
| Hip | 39" | 41" | 43" | 45" | 47" | 51" | 54" | 57" |
| Inseam | 30.5" | 31" | 31.5" | 32" | 32.5" | 33" | 33" | 33" |
Notes:
All measurements are " body measurements" not garment measurements. Please be sure to measure your own arm, chest, etc and compare it to the chart. The size guide is to be used as a guide only. It is not an exact conversion and does not guarantee an exact fit.
Mobile Warming garments have an athletic fit. If you are in between sizes or unsure on how to measure, Mobile Warming recommends you order a size up.
Chest — Measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.
Waist — Measure around the natural waistline, allowing the tape measure to sit comfortably.
Sleeves — Start at the center back of your neck and measure across the shoulder and down to the wrist. Round up to the next even number.
Hips — Measure around the natural hip line, allowing the tape measure to sit comfortably.
Inseam — Measure from the top of the interior leg to the bottom of the ankle.