Tank bras are typically made from nylon (polyamide) blends combined with stretchy fibers such as spandex or elastane. Common examples in the results include nylon/spandex and polyamide/elastane blends that provide stretch and recovery.
Lengths range from cropped to below-waist and longline styles. Fits vary from body-hugging athletic cuts to fitted crop silhouettes designed to pair with high-rise bottoms.
Most tank bras list machine washing on the care tag, though some recommend line-drying or laying flat to dry. A few product notes also advise removing removable pads before washing; follow the specific item's care instructions for best results.
Smooth, low-profile features include seamless or seamfree construction, built-in shelf bras or slimming internal layers, tagless designs, and removable pads so you can adjust shaping without visible lines.
Reviewer feedback is mixed: some items are described as form-fitting and reviewers recommend sizing up, while others have comments that they run large and suggest sizing down. Overall sizing varies across styles, so check product-specific notes and size charts.
Design choices that reduce chafing and smooth the silhouette include seamless or seamfree construction, wider strap options, pull-on/pullover cuts or built-in shelf bras that avoid hooks and multiple layers, and flat or minimal seams to limit irritation.