All clothes, items worn to cover the body.

Specific clothing - including even superhero T-shirts - can make people more confident in all sorts of situations. In one study, students were more assured when wearing a Superman t-shirt, and women performed worse in a math test when donning a swimsuit

There could be toxic chemicals used in clothes from fast fashion chains. According to Greenpeace's 2012 study “Toxic Threads: The Big Fashion Stitch-Up,” (141 clothing items from 20 major brands, including Zara, Levi’s, Mango, Calvin Klein and H&M) four garments contained high levels of toxic phthalates, 89 garments contained nonylphenol ethoxylates (NPEs) and two items, both from Zara, contained cancer-causing amines from the use of azo dyes.

Besides, synthetic clothes may harbor bacteria causing infections. Lycra undergarments can promote yeast infections and, in addition, compress nerves. 

Lululemon’s Silverescent technology weaves silver into each thread supposedly preventing bacteria from growing and eliminating odor. For some people, though, it works worse than Rhones silver threading technology. Minerale infuses fabric with crushed volcanic rock. Chitosan technology— using crushed shrimp shells to fight odor-causing bacteria -- does not also work in all cases. Cotton prevents some bacteria (such as Micrococci, but not Staphylococci) from growth but it absorbs sweat and keeps clothes moisture.  Cocona uses the activated carbon in coconut shells to wick away moisture and block sweaty smells.

synthetic rubber-like material, resistant to oil, heat, water, and weathering. Neoprene is the generic name for an organic polymer called polychloroprene, typically built from the monomer 2-chloro-1,3-butadiene.
Neoprene is used for face masks, dish-washing gloves (as an alternative to latex), scuba wet suits, leggings, skirts,  pants, t-shirts and other clothing. Neoprene is also known as "Mixed dialkyl thioureas (MDTU), "leather of the summer" or "scuba".  
Neoprene is water resistant, temperature controlling and flexible which makes it a perfect material for things like computer sleeves, wet suits, athletic shoes, gloves and knee braces. Neoprene traps warm air between the fibers or a thin layer of water between the suit and the wearer's skin that helps to keep the wearer warm. Sensitivity to neoprene might be exacerbated by sweating and could elicit redness, itching, scaling and sometimes blistering.  

textile fabric made from soft hair forming the coat of sheep, goat, alpaca and some other mammals
​ the fine soft curly or wavy hair forming the coat of a sheep, goat, or similar animal, especially when shorn and prepared for use in making cloth or yarn.
The dense, soft, often curly hair forming the coat of sheep and certain other mammals, such as the goat and alpaca, consisting of cylindrical fibers of keratin covered by minute overlapping scales and much valued as a textile fabric.