UPF stands for Ultraviolet Protection Factor and is a rating system used to show how effectively fabrics shield skin from ultraviolet (UV) rays. The higher the UPF rating, the greater degree of UV protection a garment offers.
A fabric with a rating of UPF50 is considered among the highest protection rating, blocking 97.5% of UV radiation exposure to the skin, making it one of the safest and easiest ways to protect your skin from damage.
HOW IT WORKS
One common misconception about UPF is that it is a treatment that is applied to the fabric after it's been weaved. On the contrary, the UPF rating system considers the construction of the fabric from the density of the weave, yarn gauge and fiber structure. Other factors to consider include fabric color, weight and stretch.
UPF RATING SYSTEM
The UPF rating system was developed in 1998 by Committee RA106 using AATCC Test Method 183¹. This method is based on the original guidelines established in Australia in 1994.
The main difference between UPF rating system and the SPF rating system is that SPF only tests for UBV rays, where UPF tests for both UBV and UVA rays.
Below is the ASTM (American Society for Testing and Materials) Standard for Sun Protective Clothing:
|UPF rating||Protection category||% UV radiation blocked|
|UPF 25–39||Very good||96.0–97.4|
FABRICS OFFERING HIGH UPF RATING
Below are some fabrics we offer that hold exceptional sun protection properties. Many of them also have a ChitoSanté treatment, which is an environmentally friendly treatment that adds anti-bacterial, non-toxic, breathable, anti-static and moisture wicking features.
UPF Fabric Listing:
- T4073/T4074 - ChitoSanté Extreme
- T4078 - Coolbest Heavy Wicking Pique
- T4080 - Fine Wicking Pique
- T4095/T4096 - ChitoSanté Interlock
- T4155 - Polyester Interlock With Collagen
- T4156 - Polyester Interlock With Collagen
- T4157 - Recycled Polyester Interlock With Collagen
- T4167 - Nylon Recycled Polyester Dual ChitoSanté
- T4195 - ChitoSanté Tech Heather Jersey
- T4291 - ChitoSanté Midweight Compression
- T4292 - Recycled ChitoSanté Mid-Weight Compression
- T4294/T4295 - Light Weight ChitoSanté Interlock
- T4296 - Light Weight ChitoSanté Interlock (Heather Colors)
- T4471 - Recycled Polyester Spandex Dual ChitoSanté Jersey
- T4473 - Recycled Polyester Spandex Double Texture Jersey
- T4474 - Recycled ChitoSanté Extreme
- T4488 - Recycled ChitoSanté Hi Count - Antibacterial + Wicking
- T4573 - Recycled Chito Poly Spandex Double Texture Jersey
- T4794 - Recycled Light Weight ChitoSanté Interlock - A/B + Wicking
- T4795 - ChitoSanté Interlock
- T4895 - Recycled ChitoSanté Interlock
- T4994 - ChitoSanté Poly Spun Jersey
Read more on UPF and it's skin protection properties below.
- Sun Protective Clothing - The Skin Cancer Foundation
- Sun Protective Clothing - Healthline
- What's the Difference Between UVA and UBV Rays? | Healthline
- What's the Difference Between UVA and UBV Rays? | University of Iowa Hospitals & Clinics
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The KenDor Resources and Useful Links are intended to aid our customers in understanding the general guidelines and/or industry standards for certain practices or fabric characteristics. These resources are not to be considered an official resource of information and should not be referenced as formal or legal standard guides. Customers are responsible for all fabric testing, securing marketing licenses and any claims made for their individual products. KenDor is not liable for any customer claims made.