UPF 50+ training tee. Sweat all you want, stay out longer.

Size	To fit chest (cm)you	Pit to pit (cm)garment	Length (cm)garment
XS	84–90	46	65
S	90–96	49	68
M	96–102	52	70
L	102–108	55	73
XL	108–114	58	75
XXL	114–120	61	78

Size	To fit chest (cm)you	Pit to pit (cm)garment	Length (cm)garment
XS	84–90	48	66
S	90–96	51	68
M	96–102	54	70
L	102–108	57	72
XL	108–114	61	74
XXL	114–120	65	76

Size	To fit chest (cm)you	Pit to pit (cm)garment	Length (cm)garment
XS	84–90	48	66
S	90–96	51	68
M	96–102	54	70
L	102–108	57	72
XL	108–114	61	74
XXL	114–120	65	76

Size	To fit chest (cm)you	Pit to pit (cm)garment	Length (cm)garment
XS	84–90	47	62
S	90–96	50	65
M	96–102	53	67
L	102–108	56	70
XL	108–114	59	72
XXL	114–120	62	74

Size	To fit chest (cm)you	Pit to pit (cm)garment	Length (cm)garment
XS	84–90	44	73
S	90–96	47	75
M	96–102	50	77
L	102–108	53	79
XL	108–114	56	81
XXL	114–120	59	83

Product information

We ship to the UK and Channel Islands using a Royal Mail tracked service.

We're happy to exchange or refund any clothing you're not 100% happy with.

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Supplier for Paris

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Supplier to the ECB

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You're training hard. Your protection shouldn't hold you back.

We've been there too.

Sunscreen slides off when you sweat.

That means every hour out there, you're less protected than when you started - and most people have no idea.

You're overheating out there.

Many technical and cotton tees hold heat against your skin. The longer a run goes, the harder your body works just to cool down - pace drops, effort climbs, and you're fighting your kit before you're fighting the course.

Treated UPF washes out.

Chemically-treated UPF washes out. After 20 washes, you're back to minimal protection.

What makes this different

Train hard without stopping to reapply.

Most sun protection is designed for the beach - something you apply once and then mostly ignore. We built this tee for people who are actually moving: running intervals, grinding out long rides, sweating through a summer session. The kind of training where stopping to reapply isn't just inconvenient - it just doesn't happen. UPF 50+ protection woven directly into the fabric means it doesn't wash off, sweat off, or run into your eyes. You put it on and forget about it. We built it because we live this way too.

What you get instead

UPF 50+ built into the fabric.

Protection woven directly into the fabric, not chemically added. Blocks 98% of UV rays wash after wash — one less thing to think about.

What you get instead

Moisture-wicking and quick-dry.

Moves sweat away from your skin. Dries fast so you stay comfortable.

What you get instead

Protection that outlasts the wash.

UPF 50+ that doesn't wash out - ever. Our protection is built into the formula, not sitting on the surface. Trusted by Marathon des Sables winners. Built for conditions that break everything else.

How this fits

Straight cut. Athletic fit.

A close-fitting, athletic cut designed to move with you. Unisex, it's cut without excess fabric so it doesn't bunch or distract during activity. If you're between sizes or prefer a looser look, size up. Check the size guide for chest and length measurements if you're unsure.

PROTECTION IS BUILT IN.

Protection's built in. Our UPF 50+ fabrics block 98% of UV through structure, not chemicals. The weave does the work so protection doesn't wash out, wear off, or fade over time.

WHAT'S IN IT AND WHY

90% polyester, 10% spandex. Four-way stretch for full range of motion without restriction.
Performance matt yarn. Moisture-wicking, quick-drying, comfortable at pace.
High-density jacquard weave. The tight construction physically blocks UV — making the protection structural, not chemical.

OTHER USEFUL INFO

Gentle machine wash 30°C | Hang to dry | No tumble dry, no iron, no bleach | UPF structural not chemical | Available XS/S/M/L/XL/XXL

FABRIC INFORMATION

90% polyester, 10% spandex

Comfortable and good sizing. Felt protected in the very strong Caribbean sunshine. Worked well with additional Lifejacket sunscreen.

Chris H - Caribbean tested

Bought 2 active tees white and blue for a trip to the Canary Islands. Great for by the pool or beach and smart enough to wear into a restaurant.

Stuart A - Canary Islands tested

The Active UPF Tee is just a quality shirt. I've used it for runs, and also just when out and about in the Sun. I'll be buying more.

Chris - Runner

UPF 50+ Active Tee

UPF 50+ Active Tee

UPF 50+ Active Tee

Here's how we're different.

UPF 50+ Active Tee	Big brand wicking tee
UPF 50+ lab tested and certified Available in XS/S/M/L/XL/XXL	No UV testing or certification Guessing. Hoping. No idea what protection you're getting.
Engineered yarns and weave Technology built into the fabric itself.	Standard fabric construction Just a t-shirt. No UV consideration in design.
Skip sunscreen on covered skin Covered = protected. Simpler routine.	Still need SPF under your shirt Your "athletic top" isn't actually protecting you.
Flatlock seams No chafing after hours of movement.	Standard seams that rub Red marks under your arms by lunchtime.

AS FEATURED IN

GOOD TO KNOW.

Is this clothing chemically treated to offer UPF protection?

No. All of our clothing offers the UPF50+ protection it does due to the natural properties of the fabrics we use. This means you can wear and wash it over and over again, safe in the knowledge it will continue to keep your skin protected and you comfortable.

When will I get my order?

We try to get every order out the same day up until 4pm during the week. From then, please allow 2-3 business days for your order to arrive.

Who will be delivering my order and is there tracking?

We use a tracked service for nearly all of our deliveries. You will get an email from us when your order has been despatched which will include the tracking details.

How do your sizes compare to other brands?

We would say our sizing comes up true. This is a more relaxed fit than our other items and is oversized with a dropped shoulder. That shouldn't change the size you order and we would recommend ordering your usual size. If in any doubt check out the size guide towards the top of the page or give us a shout.

Can I return the product if I don't like it?

We’re happy to exchange or refund any clothing you're not 100% happy with. Just make sure it’s unworn and in perfect condition. To start a return, head to Returns and exchange and follow the instructions.

Where do you ship?

We ship to the UK and Channel Islands using a Royal Mail tracked service.

Who is LifeJacket for?

We're for anyone who wants to look after their skin and perhaps learn a little more about how to best achieve that. Whether you're a professional athlete, weekend warrior, dog walker, gardener or commuter, the science remains the same. Our products cater for every personal preference and environment, so it's just about finding what works for you.

WHAT OUR COMMUNITY SAYS.

4.9

Rated 4.9 out of 5 stars

Based on 54 reviews

Total 5 star reviews: 49 Total 4 star reviews: 5 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0

Product QualityRated 4.8 on a scale of 1 to 5

SizingRated -0.2 on a scale of minus 2 to 2

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54 reviews

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B
Bill
Verified Buyer
8 hours ago
Rated 4 out of 5 stars
practical tee
This is a great active tee shirt. I was expected a looser fit but actually find the neatness of the fit and the elasticated “hem” at the bottom of the shirt holds it in place and makes it ideal for walking or running. Quick drying the cooling in effect.
Was this helpful?
O
Oli
Verified Buyer
2 weeks ago
Rated 5 out of 5 stars
Love it - great summer addition
comfy, great fit and love exercising in it
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IH
Iain H.
Verified Buyer
1 month ago
Rated 5 out of 5 stars
Good Quality T
I gave just bought 2 Active T’s (light and dark blue .Great material and good quality. Took the sizing advice as I am at the top end of large size range and went for XL which give a perfect ( for me). My only complaint is lack of colour choice- I don’t like white in general for clothing and would buy more if more colours available. Please make in more colours!
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CW
catherine w.
Verified Buyer
11 months ago
Rated 5 out of 5 stars
Active Tee
Lovely feel to the fabric and nice to wear.
Normal sizing.
Love the colour. Washes well.
Was this helpful?
CH
Chris H.
Verified Buyer
1 year ago
Rated 5 out of 5 stars
Perfect for the strong Caribbean sunshine.
Comfortable and good sizing. Felt protected in the very strong Caribbean sunshine. Worked well with additional Lifejacket sunscreen. Good purchase!
Was this helpful?

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Trusted by athletes, made for everyone

UPF 50+ Active Tee

Product information

Trusted by Olympians. Made for everyone.

You're training hard. Your protection shouldn't hold you back.

Sunscreen slides off when you sweat.

You're overheating out there.

Treated UPF washes out.

Train hard without stopping to reapply.

UPF 50+ built into the fabric.

Moisture-wicking and quick-dry.

Protection that outlasts the wash.

Straight cut. Athletic fit.

PROTECTION IS BUILT IN.

Here's how we're different.

Wear.

Combine.

Pro Tip.

GOOD TO KNOW.

WHAT OUR COMMUNITY SAYS.

READY TO GET OUTSIDE?

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