Alpha Direct 4004 Hoodie


Coyote Brown
Castor Grey
Rhubarb Red
Select a size. Check your measurements to confirm fit. If desired dimensions are not outlined here, fill in the custom sizing box. If selected/requested dimensions are met, size based returns are not accepted. However, post sale modification is available at an hourly rate.
XS dimensions (inches) : Shoulders - 44, Torso - 22, Back - 26, Chest - 42, Midsection - 40, Hips - 38, Arm - 25, Arm hole - 22, Bicep - 13, Neck - 25
S dimensions (inches) : Shoulders - 47, Torso - 24, Back - 28, Chest - 46, Midsection - 44, Hips - 42, Arm - 27, Arm hole - 23, Bicep - 14, Neck - 25
M dimensions (inches) : Shoulders - 52, Torso - 26, Back - 29, Chest - 50, Midsection - 48, Hips - 46, Arm - 29, Arm hole - 25, Bicep - 15, Neck - 25
L dimensions (inches) : Shoulders - 56, Torso - 28, Back - 32, Chest - 53, Midsection - 52, Hips - 50, Arm - 31, Arm hole - 26, Bicep - 16, Neck - 25
XL dimensions (inches) : Shoulders - 58, Torso - 30, Back - 34, Chest - 57, Midsection - 55, Hips - 54, Arm - 33, Arm hole - 28, Bicep - 19, Neck - 25
If you would like a custom fit, enter the desired garment dimensions here. Please enter all of them or select a stock size and enter the specific dimensions you would like to change here. Not all requests can be accommodated. If selected/requested dimensions are met, size based returns are not accepted. However, post sale modification is available at an hourly rate.
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The Alpha Direct 4004 Hoodie is an ultralight hoodie built with Polartec Alpha Direct 4004 fabric. It’s an excellent intense activity insulation layer that pairs with a wind shell for a very light, modular system. The structure of the fabric is very open, with fluffy tufts between. When you aren’t moving it keeps you surprisingly warm for such a light garment (4.5oz). When you are working hard and moving your excess body heat and moisture moves freely through the fabric to the outside. You can instantly feel this action when you put one on. If you stand still it feels very warm. Swing your arm, even just a little bit and you can feel the air cool you. Obviously, due to this action, it will not do much to insulate you if it is windy, as the wind cuts through it like it isn’t even there. That is why it is best paired with a wind shell. The combination together becomes a warm, versatile, and modular system. The wind shell alone is enough to insulate a little bit and protect you from evaporative cooling in high winds. It is important to select a wind shell that has some breathability such as the Argon Wind Jacket or Hyper D Wind Jacket The Alpha Direct alone will insulate you when you’re working hard and need really high breathability. Put the two together and you get a very warm system when winds kick up and the temp really drops or you want static insulation at camp. This can’t compare to a true static insulator like a puffy, but with a total weight around 6 ounces for the two (1.5oz Argon shell, 4.5oz Alpha hoodie), they cover a lot of conditions for very little weight.

The hoodie is built with a cross over hood and cuffs with thumb holes.

Alpha Direct Hoodie – Approximately 4.5oz (medium)

Available in Castor Grey, Olive, Coyote Brown, and Rhubarb Red


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