Paragon Sports
The Reactor Half Zip is a clean, effective 100 wt. micro-fleece sweater that takes the nip out of chill weather or low thermostats. These fabrics are available in a range of weights to provide the right level of insulation for most outdoor activities. Polartec Classic 100 weight fabrics are the lightest and are excellent for a warm first layer or lightweight sweater. Polartec Classic 300 fabrics are the heaviest and provide a warm thermal layer for very cold outdoor activities. Halfway in between are Polartec Classic 200 weight fabrics, providing outstanding warmth and versatility.
Features:
- Designed to Fit Over a Light Layer
- Flat Lock Construction
- Half-zip Pullover Style
- Polartec Classic 100 Micro Polartec Classic 100 Micro
Evogear
If you’re looking for bright colors and awesome secret hidden pockets, you’re probably not going to be too excited about the Marmot Reactor Half-Zip. But if a simple, functional, no-frills or fancy doodads pullover is what you’re looking for, the Reactor is your man. Zip it up nice and snug when the wind picks up or unzip and let your chest hair hang loose. And I can guarantee that if you do that, you’re sure to elicit a reaction.
Features:
- Fit - Designed to fit over a light layer
- Tech Features - Polartec Classic 100 Micro P-460 is a 100 weight, soft micro fiber material with double velour that doesn’t pill in the wash.
Mountain Gear
Just the fleece you've been waiting for - Marmot's Reactor Half Zip Jacket has it all with a sharp-looking half-zip design and soft Polartec 100 fleece that layers well with a shell or makes an excellent standalone in moderate temperatures.
Features:
- Get more or less ventilation by adjusting the 12-inch, center front zipperQ zippered sleeve pocket
- Nothing beats soft Polartec Classic 100 fleece for combined softness, durability, and easy maintenance
SummitHut.com
Marmot's Reactor Half Zip features soft, warm 100 weight PolarTec Classic fleece with an added zippered sleeve pocket for convenience. This is the perfect pullover for a post-climb cover up or for those chilly fall evenings.
Features:
- Polartec® Classic 100 weight FleeceQ2 inch Center Front Zip
- Updated Design
- Zippered Sleeve Pocket
Altrec
The Marmot Reactor Half Zip for Men is a clean, effective 100 wt. micro-fleece sweater that takes the nip out of chill weather or low thermostats.
Features:
- Main Material: PolartecClassic 100 100% Polyester Micro Fleece 4.6 oz/yd
- Polartec Classic 100 wt Fleece
- Updated Design
- Zippered Sleeve Pocket
Marmot Mountain
The Reactor Half Zip is a clean, effective 100 wt. micro-fleece sweater that takes the nip out of chill weather or low thermostats.
| Fabric: | 100% polyester fleece |
|---|
 | Marmot Reactor Full Zip | $49.90 - $80.00 |
 | Marmot Reactor Jacket | $71.95 - $75.00 |
 | Marmot Reactor Jacket - Boys | $49.00 - $50.00 |
These are products that have been indicated being comparable to this product:
 | Marmot Aegis Jacket Men's Clothing > Jackets & Vests | $138.95 - $150.00 |
 | Marmot Gravity Jacket Men's Clothing > Jackets & Vests | $119.90 - $159.99 |
 | Marmot Midweight Zip Neck LS Men's Clothing > Fleece & Base Layers | $44.95 - $58.00 |
 | Marmot Power Stretch Half Zip Men's Clothing > Jackets & Vests | $62.95 - $95.00 |
Marmot Reactor Half Zip Review Summary:
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Reviews:
Love Marmot Fleece! | |
| Rating: |  |
| Really warm so you can wear it by itself in 35 degree weather. It's also light enough that you can wear it under an outer layer. Very durable and longlasting. I've had another Marmot fleece that I've worn regularly for 6+ years. | |
| Dave at Altrec on 01/21/2010 | |