A triangle bikini top is a women’s swim top with two triangular fabric cups connected by adjustable strings — typically tied behind the neck and around the back. The cut is one of the oldest and most popular bikini styles, prized for the customizable fit (the strings adjust to any body shape) and minimal coverage that gives clean tan lines.
This collection covers our women’s triangle bikini top range. Most styles include adjustable halter ties at the neck and tie closure at the back, letting you customize the bust cup position and the band tightness. Some pieces include light removable padding for shape and modesty; others stay unlined for the most natural fit. The fabric is chlorine-resistant polyamide-elastane with double lining at the bust for opacity.
Are triangle bikini tops supportive enough? For smaller-to-medium busts (A to C cup), yes — the triangle cut gives light support through the band and tie tension. For fuller busts (D and above), triangle tops give less structural support than underwire or balconette styles; the bust can shift during movement. Fuller-busted women often prefer underwire tops for security and underwire-supported triangle styles for a hybrid look.
What size triangle bikini top should I choose? Triangle tops typically use clothing sizes (S, M, L) matched to the band measurement at the underbust. The adjustable straps give some flexibility in fit. Measure under the bust at the band line and match to the size chart. If the top has fixed-size triangular cups (no slide adjustment), check that the cup width matches your bust spread.
How do triangle bikini tops tie? Most styles have two ties: one behind the neck (halter), one around the back. Tie the back string first at the underbust to set the band tightness, then tie the neck string for the bust position. For a tighter, more lifted look, tie the neck string higher; for a looser, more relaxed fit, tie lower.
Can the bust cups slide on triangle tops? On many styles, yes — the strings thread through the corners of the triangle cups, allowing the cup position to slide left or right for the bust spread. Some styles have fixed cup positions for a more structured look. Sliding cups give the most adjustability; fixed cups give more consistent shape.
How do I care for triangle bikini tops? Rinse with cool fresh water immediately after every swim. Untie the strings before washing — knotted ties can crease and weaken the fabric. Hand wash cold with mild detergent. Skip the washing machine, fabric softener, and the dryer. Lay flat to dry in the shade.


















