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SUL .75 Down Sweater


This is a made-to-order item. Not in stock. See the home page for the made-to-order lead time.

Available on backorder

Titanium Grey
Moroccan Blue
Dark Olive
Brick Red
Coyote Brown
Charcoal Grey
Deep Purple
Forest Green
Moss Green
Select a size. The dimensions listed are the garment dimensions, not body measurements. Fully read the applicable sizing page and follow all procedures. If desired garment dimensions are not shown here, fill in the custom sizing box. Size based returns are not accepted. However, post sale modification may be 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 - 15, Neck - 25
S dimensions (inches) : Shoulders - 47, Torso - 24, Back - 28, Chest - 46, Midsection - 44, Hips - 42, Arm - 27, Arm hole - 23, Bicep - 15.5, Neck - 25
M dimensions (inches) : Shoulders - 52, Torso - 26, Back - 29, Chest - 50, Midsection - 48, Hips - 46, Arm - 29, Arm hole - 25, Bicep - 16.5, Neck - 25
L dimensions (inches) : Shoulders - 56, Torso - 28, Back - 32, Chest - 53, Midsection - 52, Hips - 50, Arm - 31, Arm hole - 26, Bicep - 17, Neck - 25 (+$15.00)
XL dimensions (inches) : Shoulders - 58, Torso - 30, Back - 34, Chest - 57, Midsection - 55, Hips - 54, Arm - 33, Arm hole - 28, Bicep - 19, Neck - 25 (+$15.00)
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. Do not enter body measurements. Not all requests can be accommodated. Size based returns are not accepted. However, post sale modification may be available at an hourly rate. Questions should not be entered here.
Questions should not be entered here.
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The SUL (super ultralight) series garments are aimed at pushing weight as low as possible for a given fill amount, without compromising function. These are down sweaters in the strictest sense. No zippers, no pockets, no drawcords, no linings, no webbing, just insulation in the form of down in a nylon shell.

Fill type – 900fp Hyperdry goose down

Fill weight – 1.7oz (small), 1.8oz (medium), 2oz (large)

Total weight – 3.9oz (small), 4.4oz (medium), 4.9oz (large)

The goal with the SUL down sweater .75 was to make the lightest jacket possible while achieving functional warmth. The chambers are 4″ wide and the calculated loft is .75″. It is surprisingly warm for such a light garment. Alone, I estimate this to go down to freezing while inactive, but it’s probably getting uncomfortable for most people in the 30s (Fahrenheit). It has a cinch at the neck and a cinch at the bottom hem to keep out drafts. Both cinches are removable. One should plan on adding room for loft in the fit. When in doubt, oversize. A snug and fitted puffy is cold. A loose fitting puffy is warmer and usually ends up covering more of your body.

It’s a great garment to pair with the Alpha Direct Hoodie and Wind shell. Those two cover a huge range of active scenarios. Add the SUL .75 to the mix and you extend the static insulation capabilities quite low. The Alpha inner layer, SUL .75 mid layer, wind shell outer layer combo can provide solid 4 season warmth. Keep in mind that a wind shell may need to be upsized to prevent compression when layering over a puffy.

A puffy is most often used as an inactive layer for stops, at camp, or to help boost a sleep system. They don’t make for very good active layers since your sweat can easily compromise the down fill. This makes a zipper for ventilation a somewhat frivolous feature that can add a significant amount of weight and bulk. Pockets can be nice to have, but they often add a big chunk of weight and bulk and compromise the performance of a jacket by creating cold spots and by pulling insulation flat when there is weight in them. For those wanting pockets to warm hands I recommend adding a few inches to the sleeve to cover your hands. This is lighter than pockets and doesn’t compromise the overall warmth. All non-essential sewn through lines have been eliminated so the down can loft and cold spots are reduced. Simplicity and reduced weight and bulk are not the only benefits of all this. Leaving off many tedious features also reduces my labor and allows me to offer a very affordable jacket at an extremely low weight.

It’s meant to be used with a modular hood or head insulation, but can be built with an integrated hood.

More warmth out of less fill Sewn Through Baffle Construction and Its Effect on Warmth – Timmermade

Weight 0.2 kg


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