Sun protective clothing, SPF (Sun Protection Factor) for clothing UPF (Ultraviolet Protection Factor), UV apparel is clothing specifically designed for sun protection and ours is produced from a fabric rated for its level of ultraviolet (UV) protection. A novel weave structure and denier (related to thread count per inch) may produce sun protective properties is how BU achieves well over UPF 50+ protection, allowing for 99%+ protection.

Some textiles and fabrics for sun protective clothing (uv apparel) may be pre-treated with UV-inhibiting ingredients during manufacture to enhance their effectiveness (ie. Zinc oxide or Titanium Dioxide). The only problem with adding the minerals in uv apparel is that over time, they can wash out of the uv apparel.

A number of fabrics and textiles in common use today need no further UV-blocking enhancement based on their inherent fiber structure, density of weave, and dye components, especially darker colors and indigo dyes. Good examples of these fabrics contain full percentages or blends of heavy-weight natural fibers like cotton, linen and hemp or light-weight synthetics such as polyester, nylon, spandex and polypropylene. Natural or synthetic indigo-dyed denim, twill weaves and canvas are also good examples. However, a significant disadvantage or these uv apparel clothes, is the heat retention caused by heavier-weight and darker-colored fabrics, so they are not condusive to HOT sunny weather.

As sun protective clothing (uv apparel) is usually meant to be worn during warm and humid weather, BU UV-blocking textiles and clothing are designed with moisture wicking and antibacterial properties to assist in cooling and breath-ability. BU uv apparel is very light weight, it’s not like the above materials that are thick or heavy, so you can enjoy the outdoor without overheating.

UPF (Ultraviolet Protection Factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (Sun Protection Factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%). bu uv apparel is rated at UPF 50+, and tested even higher, so virtually no uv radiation is getting through our uv apparel.

UPF Rating Chart


Light weight, soft, silky feel, wicks away moisture and feels great against your skin, that’s what it’s like to wear bu uv apparel.

There is more to sun safety than just skin care. We worked with an former sales rep, who was working on a uv apparel line, that has been tried and tested over the last 3 years. Unlike most fabrics utilized by the competition who still add chemicals or minerals (Titanium Dioxide or Zinc Oxide) that washes out over time, breez ™ (the fabric) exceeds UPF 50+ rating with the latest weaving technology.

Verified and tested by the Center of Technology for Textile (CTT), a worldly renowned independent textile laboratory. The fabric brings technical properties to superior fibers you can throw in the wash, with a silk feel encompassing dynamic stretch that feels as good as your yoga gear.

BU uv apparel is well designed with performance benefits such as shrink integrity, breath-ability, wicking, stain shield technology, anti-microbial and meticulous French Canadian design. We listen to you all and we never stop innovating!