2b:I[88214,["/_next/static/chunks/3fntmmi971322.js","/_next/static/chunks/1ymt1shyhmu-4.js","/_next/static/chunks/291ciwmgtp_xc.js","/_next/static/chunks/2owa30hnifmhr.js","/_next/static/chunks/3_4q9sj3_tv7o.js","/_next/static/chunks/3pl_ktfva9hrh.js","/_next/static/chunks/0akgp9yf63wi3.js","/_next/static/chunks/0if9ft_atm-nd.js","/_next/static/chunks/34g9e5kck4w7p.js","/_next/static/chunks/167drruh2vfuu.js","/_next/static/chunks/27l3nblmlfjdo.js"],"EmailOpenRecorder"] 2c:I[3004,["/_next/static/chunks/3fntmmi971322.js","/_next/static/chunks/1ymt1shyhmu-4.js","/_next/static/chunks/291ciwmgtp_xc.js","/_next/static/chunks/2owa30hnifmhr.js","/_next/static/chunks/3_4q9sj3_tv7o.js","/_next/static/chunks/3pl_ktfva9hrh.js","/_next/static/chunks/0akgp9yf63wi3.js","/_next/static/chunks/0if9ft_atm-nd.js","/_next/static/chunks/34g9e5kck4w7p.js","/_next/static/chunks/167drruh2vfuu.js","/_next/static/chunks/27l3nblmlfjdo.js"],"EmailPreview"] 2f:I[27201,["/_next/static/chunks/3fntmmi971322.js","/_next/static/chunks/1ymt1shyhmu-4.js","/_next/static/chunks/291ciwmgtp_xc.js","/_next/static/chunks/2owa30hnifmhr.js"],"IconMark"] 2d:Tfda9,

Our best-selling Merino wool tops – the Brighton Base Layer and Harrier – offer two different options for running in wool. Both are naturally thermoregulating and odor-repelling, with nuances when it comes to fit and function.

LEARN MORE

SHOP MERINO

Harrier

Performance top for cooler conditions

FEATURES

•

Classic relaxed long sleeve cut

•

Heavier knit, warmer when worn alone

•

Woolmark Rich Blend certified, 50% new wool plus by 37.5 Technology

SHOP HARRIER

Brighton

Seamless, lightweight base layer

FEATURES

•

Cut to wear close to the skin

•

Lightweight layer to fit under vests and jackets

•

Woolmark Wool Blend certified, 52% new wool

SHOP BRIGHTON

Free Shipping - On Orders Over $200 USD*

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285 Newbury Street Boston, MA 02115

2e:Teff,[Tracksmith - New England](https://www.tracksmith.com/) [Tracksmith - New England](https://www.tracksmith.com/) [A Tale of Two Merinos](https://www.tracksmith.com/collections/natural-performance-collection?material=contains-merino&style=long-sleeves) Our best-selling Merino wool tops – the Brighton Base Layer and Harrier – offer two different options for running in wool. Both are naturally thermoregulating and odor-repelling, with nuances when it comes to fit and function. [SHOP MERINO](https://www.tracksmith.com/collections/natural-performance-collection?material=contains-merino&style=long-sleeves) [LEARN MORE](https://www.tracksmith.com/pages/natural-performance#Section-R2nb4u_1Qje-taF9jpH98g-4) [LEARN MORE](https://www.tracksmith.com/pages/natural-performance#Section-R2nb4u_1Qje-taF9jpH98g-4) [SHOP MERINO](https://www.tracksmith.com/collections/natural-performance-collection?material=contains-merino&style=long-sleeves) Harrier Performance top for cooler conditions [Harrier Long Sleeve](https://www.tracksmith.com/collections/natural-performance-collection?collections=harrier&style=long-sleeves) [Harrier Long Sleeve](https://www.tracksmith.com/collections/natural-performance-collection?collections=harrier&style=long-sleeves) FEATURES • Classic relaxed long sleeve cut • Heavier knit, warmer when worn alone • Woolmark Rich Blend certified, 50% new wool plus by 37.5 Technology [SHOP HARRIER](https://www.tracksmith.com/collections/natural-performance-collection?collections=harrier&style=long-sleeves) Brighton Seamless, lightweight base layer [Brighton Long Sleeve](https://www.tracksmith.com/collections/natural-performance-collection?collections=brighton&style=long-sleeves) [Brighton Long Sleeve](https://www.tracksmith.com/collections/natural-performance-collection?collections=brighton&style=long-sleeves) FEATURES • Cut to wear close to the skin • Lightweight layer to fit under vests and jackets • Woolmark Wool Blend certified, 52% new wool [SHOP BRIGHTON](https://www.tracksmith.com/collections/natural-performance-collection?collections=brighton&style=long-sleeves) [Get Early Access - When You Sign Up For SMS](https://www.tracksmith.com/pages/newsletters) [Free Shipping - On Orders Over $200 USD*](https://www.tracksmith.com/) [Join Hare A.C. - Global Running Community](https://www.tracksmith.com/pages/hare-ac-overview) [Custom](https://www.instagram.com/tracksmithrunning/) [Custom](https://www.strava.com/clubs/176890) [Custom](https://www.youtube.com/channel/UCl7frHzrQKwFezjy_grRppA) [CONTACT US](https://help.tracksmith.com/en-US/contact) [RETURNS](https://www.tracksmith.com/pages/returns-exchanges) [View in Browser](https://manage.kmail-lists.com/subscriptions/web-view?a=Qj7sbz&c=01KZJDSAE048PWZQFFFT9MPFCZ&k=150907c608a4145e509c8a9b9456a386&se=tracksmith%40mailspo.com&m=01M4X7DP3KDGTD9BK60YZN5A86&r=01M4XZ4QHZB56JH25J4MS375HK) [Privacy Policy](https://www.tracksmith.com/pages/privacy-policy) [Unsubscribe](https://manage.kmail-lists.com/subscriptions/unsubscribe?a=Qj7sbz&c=01KZJDSAE048PWZQFFFT9MPFCZ&k=150907c608a4145e509c8a9b9456a386&se=tracksmith%40mailspo.com&m=01M4X7DP3KDGTD9BK60YZN5A86&r=01M4XZ4QHZB56JH25J4MS375HK) [View in Browser](https://manage.kmail-lists.com/subscriptions/web-view?a=Qj7sbz&c=01KZJDSAE048PWZQFFFT9MPFCZ&k=150907c608a4145e509c8a9b9456a386&se=tracksmith%40mailspo.com&m=01M4X7DP3KDGTD9BK60YZN5A86&r=01M4XZ4QHZB56JH25J4MS375HK) [Privacy Policy](https://www.tracksmith.com/pages/privacy-policy) [Unsubscribe](https://manage.kmail-lists.com/subscriptions/unsubscribe?a=Qj7sbz&c=01KZJDSAE048PWZQFFFT9MPFCZ&k=150907c608a4145e509c8a9b9456a386&se=tracksmith%40mailspo.com&m=01M4X7DP3KDGTD9BK60YZN5A86&r=01M4XZ4QHZB56JH25J4MS375HK) 285 Newbury Street Boston, MA 02115 [Tracksmith Hare](https://www.tracksmith.com/) 22:["$","article",null,{"className":"min-w-0 flex-1 overflow-hidden","aria-label":"Merino Wool, Two Ways","children":[["$","$L2b",null,{"emailId":"dd72ec96-cf75-4365-b5eb-f6a57205936c"}],["$","$L2c",null,{"email":{"id":"dd72ec96-cf75-4365-b5eb-f6a57205936c","subject":"Merino Wool, Two Ways","previewText":"[Tracksmith - 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