UPF vs. SPF
UPF is an abbreviation for Ultraviolet Protection Factor. This rating system is used to measure the effectiveness of fabric to protect skin from harmful ultraviolet radiation. For example, a UPF rating of 40 will allow only 1/40th of the sun's harmful rays to penetrate the textile. A rating of 40 or higher is considered excellent, blocking 97 percent of both UVA and UVB rays.
SPF, typically associated with sunscreen, is short for Sun Protection Factor. This measurement determines the length of time it takes for redness to occur as result of sun exposure. If applied correctly, a sunscreen rated at SPF 15 will protect 15 times longer than unprotected skin. This amounts to approximately 93 percent of UVB rays. Some experts believe that no sunscreen should be expected to stay effective longer than two hours without reapplication. Sunscreen that blocks UVA and UVB radiation is preferred.
UVA and UVB
Simply stated, UVA exposure contributes to premature aging by damaging the skin's elasticity. Perhaps 90 percent of wrinkles, age spots, and visible signs of aging occur as result of the sun's harmful UVA rays which penetrates the skin more deeply. The carcinogenic effects of UVB rays are believed to cause tanning which is the skin's natural defense against the sun. Unfortunately, it is believed that UVB contributes to the development of skin cancer.
|Protection||UPF Ratings||Approximate UV Blocked|
|Good UV Protection||15 - 24||93 - 96%|
|Very Good UV Protection||25 - 39||96 - 97%|
|Excellent UV Protection||40 - 50+||97 - 99%|
The content at www.aquadesign.com is provided for general information only and is not intended to be utilized as advise, diagnosis, or care. If you have questions concerning your health, seek the advise of a physician or your health care professional.
Shirts:  Bust/Chest. Measure around largest part of chest with measuring tape around shoulder blades and under arms.  Sleeves. Bend elbow and measure from the center back neck, around the shoulder, past elbow, to the wrist. Note: All long sleeve shirts feature a button tab that allows it to double as a rolled-up short sleeve.  Neck. At the narrow-most part of the neck, measure around the circumference.
Pants:  Waist. Measure around the waistline with a loose tape. Round to the next size up. Note: All waistbands have elastic in the rear of pant that provides a flexible, comfortable fit.  Seat. Measured 8" below the top of the waistband.  Inseam (Voyager Pants). Measured from crotch to leg opening.  Rise. Measured from crotch to top of the rear waistband.
Headwear:  Measure circumference across the forehead (above brow) above the ears to the back. For all headwear, one size fits all from hat sizes:
6 1/2 (20.5" [or] 52cm) to 7 7/8 (24.625" [or] 63cm)
Select the size range that fits your actual measurements.
Headwear (Left) and Face Mask Tube (Right) Size Chart
Aqua Design | Men
Aqua Design | Women