1.) Are these truly SFP50+, have they been independantly verified with an official testing company?

I am sure if they have been verified but they surely work against UV rays. I have been using them for sometime now. My only issue was with the quality of workmanship.

Is this suitable for very thin arms?

Dear Customer, Thank you for your inquiry. Yes, those arm sleeves are suitable for most people. They are suitable for very thin arms. Please feel free to try our arm sleeves. Sincerely, Beister Customer Service

How long does the uv protection last.

Dear customer, Thank you for your question. In the sixth picture there are detailed arm sleeves long suggestions. You can use it as a reference. We suggest man choose L size. Hope to solve your question. If you have any further inquiries, please be free to contact us. Moinca Beister Customer Service

Why does it say 6 pair then when you add it to the cart it says 3 pair ?

Haven't noticed. It was 3 pairs. Same colors as the pic

Uv Cooling Arm Sleeves Upf 50 Sun Protection 3 6

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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¥2381

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Stay Cool, Look Sharp, Beat the Sun!

MAXIMUM UV DEFENSE - Shield your skin with UPF 50 protection that blocks 97% of harmful UVA/UVB rays—ditch the sunscreen and stay flawless all day.
ALL DAY COMFORT FIT - Seamless, stretchy fabric with non-slip bands and finger holes ensures a perfect 360° fit without pressure or irritation.
EFFORTLESS MAINTENANCE - Durable, easy-care fabric that stays fresh and breathable—just hand wash gently and keep your sleeves ready for your next adventure.
INSTANT COOLING EFFECT - Feel the chill—our sleeves lower skin temperature by 5°C, keeping you fresh and sweat-free even under the hottest sun.
PERFORMANCE READY VERSATILITY - From golf to cycling, running to gardening—these lightweight sleeves adapt to every activity, indoor or outdoor, with style and function.

The beister UV Cooling Arm Sleeves combine premium nylon-spandex fabric with UPF 50 sun protection, blocking 97% of UV rays while cooling your skin by 5°C. Designed with seamless stretch and non-slip features, these breathable sleeves offer all-day comfort and versatility for active professionals seeking stylish, effective sun defense during outdoor and indoor activities.

Specifications

ASIN	B07S35HS74
ASIN	B07S9YJJG2
Age Range Description	Adult
Apparel Fabric Stretch	High Stretch
Apparel Fabric Weight Class	Lightweight
Best Sellers Rank	31,726 in Fashion ( See Top 100 in Fashion ) 22 in Men's Base Layers Armwarmers
Brand Name	beister
Colour	Black
Country of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (3,544)
Customer reviews	4.2 4.2 out of 5 stars (3,544)
Date First Available	27 May 2019
Department	Women's
Fabric Type	Nylon, Spandex
Garment Size Country	Italy
Item Highlight	Breathable Soft Fabric Blocks 97% UV, Cools Skin 5°C. Non-Slip with Finger Holes for Running, Golf, Cycling & Driving.
Item Type Name	arm cuff for men and women
Manufacturer	beister
Manufacturer	Beister
Material	Cotton Fiber,Spandex
Model Number	BI-AS-002-3B-J-F
Number of Items	3
Occasion	Arm pain, Casual Fashion, Indoor Sports, Outdoor Dinner, Outdoor Sports
Part Number	BI-AS-002
Pattern	Solid
Product Care Instructions	Use a neutral detergent to wash in 30℃ water temperature. Soak for 10 minutes in detergent, cannot be steamed or boiled. Please wash it with hand gently, do not scrub hard, avoid twisting force, do not scrub with brush. Please wash separately, avoid to clean together with the deep color clothing.
Product Style	sun protection
Recommended Uses For Product	UV Protection
Size	One Size
UPC	793811627015
Ultraviolet Light Protection	UV Protection

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¥2381

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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UV Cooling Arm Sleeves UPF 50 Sun Protection 3/6 Pairs

Description

Specifications

Common Questions