PUMP!
The PUMP! Heatwave Knotty Swim Brief is built for days that don’t cool down quietly. Part of the Suncity Collection, this tie-side swim brief brings higher energy and bolder contrast, designed for afternoons that roll straight into evening without losing momentum.
Made from smooth, flexible microfiber with UPF 50 sun protection, Heatwave offers comfort, mobility, and quick-dry performance in equal measure. The adjustable side knot allows for a tailored fit, while the vivid gradient print captures lingering heat and after-hours intensity - confident, expressive, and unmistakably PUMP!.
Size Chart
Size Chart
| Size Chart | |
| Waist | |
| S | 28.5" - 30" | 71-76 cm |
| M | 30.5" - 32" | 77-81 cm |
| L | 32.5" - 34" | 82-86 cm |
| XL | 34.5" - 36" | 87-91 cm |
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