
I did a search for "tank tops to sleep in" and these are really comfortable. Easy on/off (stretchy) and the fabric is soft. I tend to sweat a lot at night and I don't feel like these retain the moisture much.

Calvin Klein π Herringbone Sleeve Men's Dress Clothing
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Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
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H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
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π Nantersan Placket Raglan Tee - A Casual Must-Have
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