Running Apparel
Tracksmith No Days Off Collection Review: Cold-Weather Running Gear That Holds Up
Four pieces from Tracksmith's winter running collection, tested in deep cold and wind, from the No Days Off Tights to the Harrier Long Sleeve.
Introduction
The Tracksmith No Days Off collection is the brand’s answer to genuine winter: sub-freezing starts, biting wind, and long runs that keep you outside for hours. Testing these pieces across multiple days of 11 to 12 degree F weather, with significant wind and a little snow, gave a realistic picture of what each one does well and where it does not.

A quick note on how this collection was assessed: the pieces were provided by Tracksmith for evaluation, but no compensation was received and the assessment is independent. Some pieces are new from the current collection, while others have been worn and washed for over a year, which makes the long-term wear picture unusually complete.
Evaluation Criteria
Four things mattered most across every piece:
- Warmth in real conditions: 12 degrees F with wind, not a mild autumn morning.
- Moisture and odor management: how each fabric handles sweat on long efforts.
- Storage: whether you can actually carry a phone, gels, and keys without a vest or belt.
- Versatility: whether a piece earns its place for running only or doubles as casual wear.
Tracksmith No Days Off Tights
The No Days Off Tights are the standout of the collection, and the headline change this year is storage. Two pockets sit at the back along the waistband, separated by a divider, each large enough for an iPhone or a gel on each side. A 10-mile easy run with a phone in one pocket produced no bouncing or discomfort. There is also a side zip pocket that angles backward along the hip, snug enough to hold a key card and house key, or even a cased iPhone 11 held tight against the thigh.
Visibility is handled with a large reflective stripe on the right thigh and another on the back of the left calf, so headlights catch you from either side in the dark. The outer shell is windproof and water repellent, and while it did not rain during testing, heavy wind and light snow were handled well.

Inside, there is no built-in brief liner. Instead, an extra layer of material is sewn over the front of the hips, crotch, and upper thighs, shielding the most wind-sensitive areas. Ankle zips help get them on, and you will need them: the fit is extremely tight, described as borderline wetsuit snug. That is apparently intentional, since Tracksmith says the fit was inspired by wetsuit technology. At 5’10” and around 140 to 145 lb, a medium fits perfectly.
Tracksmith No Days Off Merino Crew Sweatshirt
The Merino Crew Sweatshirt is built for pre-run and post-run coziness, and it delivers. It is big, chunky, and deliberately reminiscent of the oversized sweatshirts of the late 1990s, but with a more modern cut and finish. The warmth, comfort, moisture-wicking, and anti-odor properties all come from the 45% merino wool content, and the oversized hems and seams add to the relaxed feel.
It was also taken out for a 10-mile easy run in 11 to 12 degree F weather over a long-sleeve base. It held up fine for the full session, with some chill when the wind pushed through. Still, this is a heavier piece, and it is not recommended for actual workouts. Its best use is warming up after a long, cold run, when you never want to take it off.
Tracksmith No Days Off Jacket
The No Days Off Jacket has been worn for over a year of running, regular use, and frequent washing, and it still looks as fresh as the day it arrived. The current version differs from the previous one only by an added reflective stripe on one sleeve. Because the heavier construction reads as casual wear as easily as running gear, it earns double duty in a winter wardrobe.

The water-repellent, wind-resistant outer shell is paired with nylon elastane gussets in areas designed to let heat escape, so you stay warm without getting damp inside during harder efforts. Storage is well thought out: a security zip pocket on the right hip angles backward like the one on the tights, ideal for a wallet, keys, or key card, and a chest pocket fits sunglasses perfectly. A phone does fit in the chest pocket, but it weighs the jacket down oddly, so that pocket is best reserved for lighter items.
Details include sleeve gussets that stop cold air from shooting up the arms, plus a thumb hole for days when gloves are unnecessary but bare hands feel too exposed.
Tracksmith Harrier Long Sleeve
The Harrier Long Sleeve is a merino wool base layer with a heavier feel than a typical tech performance long sleeve, which is exactly what you want in deep cold. Merino brings natural moisture wicking and genuine anti-odor properties, so unlike a tech tee it does not need washing after every single run. That makes the Harrier plus the No Days Off Jacket a genuinely good travel pairing: two pieces you can wear repeatedly while keeping packing light.

For a 2-hour-20-minute run at around 12 degrees F, worn under the jacket with nothing else on top, it provided enough warmth for the full session. It has also survived plenty of washes over a long period of use without issue.
Overall Buying Advice
If you buy one piece, make it the No Days Off Tights: the combination of real storage, wind protection, and a fit that stays put is rare in running bottoms. The Harrier Long Sleeve is the natural layering partner and the best pick if you value low-maintenance merino. The No Days Off Jacket suits runners who want one jacket for both workouts and everyday wear. The Merino Crew is a comfort purchase rather than a performance one, and worth it for exactly that reason.
Conclusion
The No Days Off collection shows a brand thinking carefully about what winter running actually demands. The tights finally solve the storage problem, the jacket proves it can last years of hard use, and the merino pieces cover both warmth on the run and comfort afterward. For runners facing genuinely cold winters, this is a collection worth considering piece by piece.



