UPF stands for Ultraviolet Protection Factor. UPF measures how much of the sun’s broad spectrum ultraviolet radiation is blocked by a fabric before it can reach your skin. UPF50+ is the highest possible rating on the UPF scale and means that at least 98% of the sun’s UVA and UVB rays are not able to reach your skin, with the fabric acting as a barrier.

UPF and SPF sole’s purpose is to protect your skin from ultraviolet radiation of UV rays. SPF is found in sunscreen, lotions, and serums. SPF only measures sunscreen protection from UVB rays, or the burning rays.  UPF is for fabrics and clothing which measures UVB and UVA, or light transmitting rays, to guarantee protection from 98% of UVA/UVB rays.

The combination of color, fiber weave, weight and infusion of the best active ingredients found in sunscreen ensure that the UPF factor remains effective through repeated washes and exposure to sweat, chlorine and salt, ensuring lasting sun protection from your first wear to your last.

Factors that impact UPF Performance

At Mott50, we take testing seriously and proudly stand behind our products. Our fabrics are specially designed to retain their sun protection properties, even after multiple washes. We weave our fabrics to create a strong barrier against UV rays, keeping you safe and stylish.

Our fabrics work hard to keep your skin safe in a variety of ways. We choose special materials, like viscose from bamboo, which is a natural UV shield. We mix it with cotton and add Zinc Oxide to create our exclusive ZnO fabric—it's our unique creation. For activities like swimming, we use fabrics infused with Titanium Dioxide. Plus, our fabrics are woven with a high-tech technique that's so tight, it's like the strong bond between lifelong friends who've weathered every storm together. Your skin's protection is our top priority! 

The average white cotton T-shirt only provides a UPF rating of 5-7 when dry and drops to about UPF 3 when wet, exposing your from 1 out of 3 UVA/UVB rays. Our fabric’s technology guarantees to block 98% of UVA/UVB whether  wet or dry.

MOTT50 cutting-edge fabrics effectively block 98% of UVA/UVB rays, offering you unmatched UPF 50+ protection, guaranteed to last the lifetime of the garment, in accordance with ASTM/AATCC standards.

Absolutely not! We take sun protection seriously. We incorporate special sun-deflecting minerals into some of our fabrics, combined with an exceptionally tight weave that blocks a whopping 98% of those UV rays. This isn't just talk; we've put our fabrics through rigorous testing at independent labs, adhering to both American and International standards. We don't just stop there – every batch of fabric we use undergoes thorough testing, and each piece is marked with its individual test results.

Now, let's dive into the science for a moment. After the initial test to gauge UVA/UVB transmittance, we go the extra mile. We subject our fabrics to numerous wash cycles, blast them with 100 units of simulated sunlight to mimic fading, treat swim fabrics with chlorine, and then run a second UV transmittance test

Here's the stylish scoop: Mott50 takes sun protection to the next level, surpassing all the global standards for UPF 50 ratings. So, when we put our fabrics and clothing to the test, our ultraviolet protection factor goes way beyond the baseline of 50. But since the certification standard maxes out at UPF 50, we add that chic "+" symbol to let you know that our clothes are in a league of their own, shielding you from more than 98% of those UV rays. We've got your back, or should I say, we've got you covered in style!

Absolutely, while UVB rays change their intensity based on the sun’s position and the seasons, deeply penetrating UVA rays are present with equal intensity during all daylight hours throughout the year. Even if you are not going outside frequently, UVA rays can penetrate clouds and automotive glass. Damage caused by UVA rays, known as the “A” for aging rays, is cumulative and is suspected of contributing to skin cancer. On a daily basis, UVA causes wrinkling, brown spots, freckles, sagging skin and collagen loss. Skincare starts will protecting against UVA rays year-round. Wear UPF 50+ clothing and a broad-spectrum sunblock that protects against UVA rays.