TYR Mens Waveform Blade Splice Jammer - Blue/Green

Take two body measurements — waist and hip — using a soft tape measure against your skin. Use your waist measurement as the primary guide and compare to the sizing table above. TYR uses its own numeric sizing system (26–40) which does not correspond directly to standard UK or US clothing sizes, so always use body measurements rather than your usual size.

Training swim jammers are primarily sized by waist measurement. Use your waist as the first guide and check that your hip falls within or close to the same size range. If you are between sizes on waist, speak to a member of staff at Allens for advice.

Use your waist measurement as the primary guide. If your measurements fall across two size brackets, speak to a member of staff at Allens Swimwear for advice before purchasing.

TYR men's swimwear uses its own numeric sizing system (26–40) with approximate US size equivalents (XS through XXL). These do not map directly to UK clothing sizes. Always use your waist and hip body measurements to find the correct TYR size — do not assume your size based on a UK clothing label or other swimwear brands you may have purchased previously.

TYR produces both training and competition jammers for men. Their standard men's training jammers are designed for performance training and fitness swimming, with chlorine-resistant fabrics built for regular pool use. TYR also produces a range of competition racing jammers approved for sanctioned competitive events. Speak to a member of staff at Allens for guidance on the right TYR jammer for your level and purpose.

TYR sizes 28 and 30 both correspond to US S, and sizes 32 and 34 both correspond to US M. This reflects the fact that TYR's numeric sizing offers more granularity than standard US clothing sizes within the same general size range. Always use your body measurements — waist and hip — to determine whether size 28 or 30, or 32 or 34, is the better fit for you.

If you are between sizes, size to your waist measurement. TYR swimwear is engineered for a close, performance fit and the fabrics ease slightly with wear — if in doubt between two sizes, try the larger size and check that the waistband sits flat with no rolling or gaping. Speak to a member of staff at Allens if you are unsure.

TYR's original sizing chart lists all measurements in inches. Centimetre equivalents have been calculated and are available in the sizing table above — simply toggle between inches and cm using the button above the table. Both sets of values are body measurements taken directly from your body, not garment measurements.

Rinse your TYR jammer thoroughly in cold fresh water immediately after every use to remove chlorine, salt, and sunscreen. Hand wash gently with a mild detergent if needed. Do not machine wash, tumble dry, iron, or dry-clean. Store flat and dry, away from direct sunlight, to preserve the fabric's elasticity and colour over time.

TYR swimsuits are primarily designed for pool use. While the chlorine-resistant fabrics will tolerate occasional use in open water or the sea, prolonged exposure to salt water can accelerate fabric degradation. Always rinse the suit thoroughly in fresh water after every use. For dedicated open water or triathlon swimming, a purpose-built open water suit or wetsuit is recommended.