T-shirt Finntrail JERSEY Red 6600
Code: 6600Red-XSPrice 29 €In stock.
2 pcs - On order (2–4 working days)
0 pcs - In stock in VilniusIn stock: 2 pcsFree delivery in LT, LV and EE · 24-month warranty · 30-day returns · Wrong size? We will swap it
Not sure about the size? Tell us your height, waist and what you will wear underneath. We will tell you which size is yours.
This size is currently unavailable. Write to us and we will let you know when it arrives.
This size is currently unavailable. Write to us and we will let you know when it arrives.
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Finntrail · Shirt
Finntrail JERSEY Red 6600 UPF 50 Long-Sleeve Shirt
A long-sleeve shirt with UPF 50 protection against UV rays. The strong, moisture-repellent Jersey fabric shields your skin from the sun and keeps your body dry on a hot day outdoors. The UPF 50 fabric blocks harmful sun rays, and the long sleeves fully cover your arms, so your skin stays protected even during long hours outside. The moisture-repellent fibre stops sweat from building up and keeps your body cool. The relaxed fit is comfortable all day, and the O-shaped collar sits close at the neck. You can wear the shirt over protective clothing or as a single layer.
Who it is for
Made for summer use in the sun, when you need to protect your skin from UV rays and fully cover your arms without reaching for a separate layer or cream.
- •For anglers and outdoor enthusiasts on a hot, sunny day.
- •For travel and hiking, when you spend long hours in the sun.
- •For sport and active rest by the water.
When it shines
Best on a hot, sunny day outdoors or on the water, when you spend long hours in the sun and want to protect your skin with a single garment: UPF 50 blocks UV rays, the long sleeves fully cover your arms, and the moisture-repellent fabric keeps your body dry.
Technical specs
Materials & technology
UPF 50 sun protection
The fabric blocks harmful UV rays and protects your skin from burning during long spells in the sun or on the water. The long sleeves fully cover your arms, so there is no need for a separate cream or layer.
Moisture-repellent Jersey fabric
The strong Jersey fabric repels moisture, stops sweat from building up and keeps your body cool on a hot day. The fabric is durable and lasts well even under active use.
Relaxed fit with an O-shaped collar
The relaxed fit is comfortable all day, and the O-shaped collar sits close at the neck. You can wear the shirt over protective clothing or as a single layer.
How it differs from a plain shirt
Care
Wash inside out, cool, up to 30 °C, with a detergent made for synthetic fabrics (Mountval Polar Wash), without bleach or softener. Do not iron the print directly, iron from the reverse side. Odour after an intense day is handled by a rinse-cycle freshener (Mountval Silver Freshness). Dry at room temperature, not near a radiator.
Frequently asked questions
How does UPF 50 protection work?
The fabric blocks harmful UV rays and protects your skin from sunburn during long spells outdoors or on the water. UPF 50 means a very high level of protection.
Is it suitable for a hot day?
Yes. Although the sleeves are long, the fabric repels moisture and keeps your body cool, and the long sleeves actually shield your skin from direct sun, so the shirt is comfortable on a hot day outdoors.
How does it differ from the 6601 model?
This model has UPF 50 protection against UV rays, while the 6601 has no declared UPF. If you want certified sun protection, choose this model.
Can it be worn as a single layer?
Yes. The relaxed fit is comfortable worn as a single layer directly on the skin or over protective clothing, whichever suits your activity.
How do I pick a size?
The fit is relaxed. Choose your usual size, or go down if you want it closer-fitting. If unsure, message us and we will help.
What about warranty and returns?
We offer a 2-year warranty, you can return within 30 days, and delivery to Lithuania, Latvia and Estonia is free with a tracking number.
Peace of mind
Warranty
2-year warranty. We resolve manufacturing defects quickly, without bureaucracy.
Returns
Not right? Return within 30 days. We’ll help you pick another size.
Delivery
Free delivery to Lithuania, Latvia and Estonia with a tracking number.
Not sure about the size or whether it suits your activity? Message us, we’ll reply quickly and honestly.
And if you want an answer even faster, ask the Finntrail AI assistant (the ASK button on the page), you’ll usually get a reply right away.
Register this item in the Finntrail Club
Free annual membrane service, priority repairs, early access to new collections and a care coupon worth 3 % of every purchase at finntrail.lt. Registration is free, no matter where you bought the item.
This chart covers the whole product line. The sizes made for this particular model are shown in the size selector above.
How to Choose the Correct FINNTRAIL Men’s T-shirt and Hoodie Size
Choosing the correct FINNTRAIL T-shirt, hoodie or jersey size ensures comfort, freedom of movement and easy layering. A size that is too small may restrict movement and feel tight around the chest or shoulders, while a size that is too large fits loosely and bunches under an outer layer.
The size chart shows body measurements, not garment measurements. FINNTRAIL gear is designed with extra room for comfort and movement, so sizing should be selected according to your body measurements.
Measure Your Chest Girth
Measure around the fullest part of your chest, keeping the measuring tape horizontal. Stand straight and keep the tape close to the body, but not tight.
How to measure: measure around the widest part of your chest while breathing naturally and keeping your body relaxed.This measurement is especially important when choosing jackets and the upper part of a suit.
Measure Your Waist and Hips
Measure your waist at the narrowest part or where you usually wear your pants. Measure your hips around the widest part.
Important: do not pull in your stomach and do not tighten the measuring tape too much. The gear should leave enough room for movement, base layers and comfortable sitting.If you are choosing a suit or pants, hip and waist measurements are just as important as height.
Measure Inseam and Sleeve Length
Inseam is measured from the crotch to the inside of the ankle. Sleeve length helps determine whether the jacket sleeves will properly cover your arms during active movement.
Recommendation: check these measurements if you are taller, have longer arms or legs, or are choosing between a standard and a longer size.How to Use the Size Chart
Measurement Description Height Body height in centimeters. Chest girth Chest circumference measured around the fullest part of the chest. Waist girth Waist circumference. Hips Hip circumference measured around the widest part of the hips. Inseam Inside leg length from crotch to ankle. Sleeve Sleeve length. First, choose the size according to the main girth measurements — chest, waist and hips. Then check whether the selected size matches your height, inseam and sleeve length.
Reference Size Chart
Size Height Chest Waist Hips Inseam Sleeve XXS 158–162 80–86 70–76 82–88 53–57 53–57 XS 163–167 84–90 74–80 86–92 53–57 55–59 S 168–172 88–98 78–88 90–100 57–61 57–61 SK 168–172 100–110 90–100 102–112 57–61 57–61 M 173–177 96–102 86–92 98–104 57–61 59–63 MK 173–177 108–117 98–106 110–118 59–63 59–63 ML 180–190 96–102 86–92 98–104 63–65 63–65 L 178–182 100–110 90–100 102–112 61–64 61–64 LK 178–182 119–125 106–114 118–128 61–64 61–64 XL 183–187 108–117 98–106 110–118 61–64 63–65 XLK 185–190 124–133 114–122 126–134 63–65 63–65 XXL 185–195 116–125 106–114 118–127 63–65 64–67 XXXL 190–200 124–133 114–122 126–134 65–69 65–69 What Do K and L Size Markings Mean?
S M L XLStandard sizes for men with average body proportions.
MLLonger size for taller users whose girths match size M but who need extra length.
SK MK LK XLKWider sizes for larger chest, waist or hip measurements.
XXL XXXLLarger sizes for taller users or broader body types.
If You Are Between Two Sizes
If your measurements fall between two sizes, choose according to how the gear will be used. Jackets and suits should leave enough room for base layers, while thermals should fit closer to the body without restricting movement.
- If you are choosing a jacket or suit, the larger size is usually the safer choice.
- If you are choosing thermal clothing, the fit should be close but not tight.
- If height matches one size but girths match another, prioritize girth measurements.
- If you will wear additional layers, leave more room.
Important: technical gear should not be too tight. Fabric under tension wears faster and may restrict membrane performance and freedom of movement.Recommendation Before Ordering
Before ordering a FINNTRAIL jacket, suit or thermal clothing, accurately measure your main body parameters. Take measurements while wearing a thin base layer or clothing similar to what you plan to wear under the gear.
Best result: provide your height, chest, waist and hip measurements. If possible, also include inseam and sleeve length.Summary
To choose the correct FINNTRAIL men’s jackets, suits or thermals size, the most important measurements are height, chest girth, waist girth, hips, inseam and sleeve length. A correctly selected size ensures comfort, layering ability, freedom of movement and effective protection for active use.
Product Care Instructions
- Wash membrane clothing only with special detergents, such as Mountval Wash & Care, at a temperature no higher than 30 °C, without fabric softeners or bleach.
- After washing, restore water repellency using Mountval Waterproofing Refresher (wash-in) or a spray-on impregnation, following the product instructions.
- After impregnation, allow the product to dry naturally.
- Repair minor membrane damages with special glue, such as Aquaseal / Aquasure, only on clean and dry surfaces.
- Clean boots by hand, do not use a washing machine; if needed, use impregnation products designed for technical footwear.
Regular care helps maintain water repellency, breathability, and prolongs the product's lifespan.
For more information on how to clean Finntrail clothing and boots after use, see here.
Product delivery
We receive goods at our central warehouse twice per week: on Tuesdays and Fridays.
Depending on the order submission time, goods are included in the corresponding delivery cycle:
Order submission time Goods received Notes Until Tuesday 09:00 Friday Standard schedule. Until Friday 09:00 Next Tuesday Orders placed after 09:00 are moved to the next cycle. Important Due to holidays, inventory checks or other circumstances, delivery may be delayed by 1–3 days.
- Orders are shipped the same day they arrive at the central warehouse.
- Delivery is available to parcel lockers in Lithuania, Latvia and Estonia or by courier to your door.
- Delivery to Lithuania, Latvia and Estonia is free of charge. Courier delivery to other EU countries: Poland €4.99, Germany €9.99, other EU countries €12.99. The final cost is shown at checkout before payment.
Returns
Please inform us about a planned return by email at pagalba@finntrail.lt or by phone +370 614 98366.
- Products can be returned within 30 days from the date of receipt.
- The returned item must be unused, with all tags attached and in the original packaging.
- Returns are free within Lithuania, Latvia and Estonia. From other countries the return shipment is paid by the buyer.
- In Lithuania, Latvia and Estonia, together with the notification about the delivered parcel you will receive a return code allowing you to return the item via any parcel locker.
Available solutions after returning the product:- We will replace it with another size.
- We will suggest the most suitable alternative.
- The refund is issued within 1–2 business days after receiving the returned item.
Membrane waterproofing and breathability
Membrane fabric is usually described using two numbers, often separated by a slash: waterproofness and breathability. The first number indicates waterproofness, the second indicates breathability.
?Waterproofing
This is a sliding scale measured in mm that shows how high a column of water you can suspend over the membrane before it starts to let moisture through.
Waterproof Rating Conditions 0–10,000 mm Light rain, dry snow, light pressure. 11,000–15,000 mm Moderate rain, average snow, light pressure. 16,000–20,000 mm Heavy rain, wet snow, some pressure. 20,000 mm+ Heavy rain, wet snow, high pressure. ?Breathability
This is the amount of moisture by weight that can pass through one square metre of fabric over a period of 24 hours. It is commonly measured in g/m²/24 hrs.
Breathability Rating Level of Breathability 0–5,000 g/m²/24 hrs Low – light exercise. 5,000–15,000 g/m²/24 hrs Medium – medium to high energy activity. 15,000 g/m²/24 hrs+ High – vigorous sustained activity.
