The material is similar to Nike Dry Fit stretch clothing. I bought them as tank tops to wear under a button down shirt. I used to love t-shirts like Tommy John's, but found the cotton ones too hot to wear in the summer months while living in Texas. They are perfect for me to tuck in and keep my shirt from coming out. They're also tailored so they don't clump up under my shirts. Then they are nice and cool to wear.
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