Nike Womens Hydrastrong Solid Fast Back One Piece Swimsuit - Navy Blue

Measure your bust (A), waist (B), hips (C), and torso (D) using a soft tape measure taken directly against your skin. Use your hip measurement as the primary guide and compare to the sizing table above. If your hips and waist correspond to different sizes, order the size indicated by your hip measurement. Speak to a member of staff at Allens if you are unsure.

If you are between two sizes, order the smaller size for a tighter, more performance-oriented fit, or the larger size for a more comfortable, relaxed fit. This is Nike's official guidance — the best choice depends on your personal preference and the type of training you are doing. Speak to a member of staff at Allens if you need further advice.

Start at the midpoint of your shoulder — halfway between the base of your neck and your shoulder joint. Run the tape measure over the fullest part of your bust, down through your legs, and back up your spine to the starting point. This measurement ensures the swimsuit sits correctly across the shoulders and through the body without pulling or gaping.

Nike performance swimwear is designed for a close, streamlined fit suited to active swimming. The sizing table above uses body measurements, so comparing your actual measurements to the table will give the most accurate result. If you prefer more coverage or a less compressive feel, consider ordering one size up. Speak to a member of staff at Allens if you are unsure.

Nike HydraStrong is a heavy-duty performance fabric made from polyester and PBT blends specifically engineered for swimmers who train frequently in chlorinated pools. It resists chlorine degradation, sun fading, and loss of stretch over time — meaning the suit retains its shape and coverage session after session. HydraStrong suits are significantly more durable than standard fashion swimwear.

Nike offers several performance cuts to suit different training styles. Racerback suits provide a full range of arm motion ideal for freestyle and butterfly. Fastback suits offer a wider back panel for additional coverage and support. Cutout styles balance performance with style. If you prioritise maximum shoulder mobility, choose a racerback or fastback. Speak to a member of staff at Allens for guidance on which cut best suits your training.

Rinse the suit in cold fresh water immediately after every use to remove chlorine and salt. Machine wash on a gentle cycle if needed — avoid washing with heavy items such as towels or jeans which can damage the fabric. Do not tumble dry, iron, or dry-clean. Dry flat away from direct sunlight to preserve the fabric's stretch, shape, and colour over time.

Nike's HydraStrong performance swimsuits are primarily designed for pool training. The chlorine-resistant fabric and secure lining make them excellent for frequent pool use. They can be worn in open water, though a wetsuit is typically recommended for cold water open water swimming. For more advice on the right swimwear for your training, speak to a member of staff at Allens.