In January, Under Armour introduced what might be described as “performance pajamas,” infused with technology designed to enhance athletes' recovery.
Now comes the extension of that line — “athlete recovery” bed sheets and pillowcases.
Like the sleepwear, the bedding is endorsed by New England Patriots quarterback Tom Brady, an Under Armour emissary who is as meticulous about his sleep and recuperation as he is about studying defenses.
The bedding and sleepwear employ technology based on research into the effects of far infrared radiation.
The products contain bioceramic particles — tiny hexagon shapes are visible on the interior fabric — to absorb infrared waves, reflecting the far infrared energy back to the skin.
Infrared is naturally emitted by living things. Far infrared — the "far" refers to its position on the light spectrum — is not harmful and research suggests it could have therapeutic value by increasing blood flow.
"I'm pretty sure there is some effect. I wouldn't call it a dramatic effect," Harvard Medical School professor Michael Hamblin said in an interview when the pajamas came out.
Brady, 40, who is in bed by 9 p.m. most nights and up by 5:30 a.m., told The Baltimore Sun earlier this year: “Football is not very fun if you're hurting all the time. I want to feel like I'm recovering when I'm sleeping. You've got to take really proactive steps."
The reigning Super Bowl MVP said it took him "about two days" to realize the pajamas' benefits and he promptly gave some to his wife, model Gisele Bündchen.
The bedding sets includes a top sheet, fitted sheet two pillow cases and cost from $250 to $350 depending on the size.
A product disclaimer says: “Not intended for use as a medical device.”