Särmä TST L3 Loft Jacket

A very lightweight and breathable loft jacket with Climashield insulation. Packable enough to fit right in your pants' cargo pocket. Designed for use as an insulating mid-layer under your regular field jacket, can also be used as an outer layer during static breaks or other light activities.

Features

• Relaxed fit, sized for wear over base/mid layers
• Breathable and quick drying
• Elastic cuffs and adjustable collar and hem
• Long hem at the back
• Articulated elbows
• Zippered breast pocket
• Weight, Medium: 405 g (0.9 lbs)
• Rolled size, Medium: 10 x 20 cm (4" x 8")

The L3 is primarily designed for wear as an insulating layer under your field jacket but also functions when donned over your other clothing as a quick means for extra warmth when pausing for a break in cold weather. Thus the simple design, very low profile, and one single breast pocket on the left-hand side, easily accessed after opening the front zipper of any jacket worn over the L3. The construction and insulating properties are comparable to a modern lightweight summer sleeping bag.

L3 - Insulation layer

The third layer of the Särmä TST clothing system, designed to be worn over a base layer of merino wool and under a field uniform or other outer shell. L3 garments come in two styles, unlined wind wear and lofty thermal wear with Climashield insulation. Lightweight, quick-drying, and highly breathable fabrics guarantee effective moisture management and great packability.

Take a look at our Särmä TST Clothing System!

Pro-Tip: The L3 is also a clever choice if you want to extend the temperature range of a lightweight sleeping bag; just use it as a thermal pyjama! The materials and construction really serve this option.

Materials

Outer fabric: Ultralight 40D Ripstop-Polyamide, 40 g/m² (1.18 oz), 100% PA. Very lightweight, quick-drying, and really strong for such a lightweight material. All visible fabrics are unofficially NIR-compliant according to our tests.

Insulation: Climashield Apex 67g/m², 100 % PES. This is one of the best insulation options there is, fantastic weight-to-insulation ratio and great performance even in wet conditions. Apex is a continuous fiber filament. This means it does not need any attaching stitching as you would find on common polyester or down loft garments. By eliminating these stitches, we also eliminate possible cold spots, further adding to the insulating properties of the garment.

Lining: 100% PES

Materials 2.0

The new version has some new materials. The main material is 100% polyamide ripstop (70g/m²), non-fluorinated water repellent finish. This fabric is more durable. The color is somewhat darker Ranger Green than the old version, and the rubber bands in the cuffs aren’t as tight.

The insulation is the same high-quality 67/m² Climashield Apex and the same 100% polyester lining, although this time the collar lining is gray instead of the green found on the old one. The new version also has Kroko zippers.

Sizing

Sized to fit over warm mid-layer clothing without being tight but staying lofty enough to function as insulation. If you wish to use the L3 jacket over all your gear we recommend simply measuring your chest when wearing the gear in question and picking your size accordingly.

The retiring version was sewn in Estonia, and the new version is sewn in Poland.