Amanzi Girls and Womens Tieback Size Guide

The AMANZI Tie Back One Piece is an all-purpose training swimsuit with a fashion edge, ideal for competitive and active pool and surf swimmers. The thin tie back straps are fully adjustable for a perfect fit, and the wide open back follows the natural contours of the body for an ergonomic fit and superior comfort. Women's sizes (30 and above) feature a high leg height, while girls' sizes (26 and 28) feature a medium leg height for a more conservative fit. Made from AMANZI Armor chlorine-resistant fabric with full front and back lining, bar tack reinforcement, and maximum 50+ UV protection.

Shop Women's Tie Back Swimsuits → Shop Girls' Tie Back Swimsuits →
Sizing Table — AMANZI Tie Back One Piece (AM19)
Size 26 28 30 32 34 36 38
UK / US 26 28 30 32 34 36 38
AUS Girls 10 Girls 12 Girls 14 / Womens 06 Womens 08 Womens 10 Womens 12 Womens 14
D 140 152 164 / 32 34 36 38 40
F 10 ans 12 ans 14 ans / 34 36 38 40 42
Body Measurements
Bust (cm) 70–75 75–80 78–83 80–85 85–90 90–95 95–100
Waist (cm) 62 64 66 70 74 78 82
Leg Height
Leg Height Medium Medium High High High High High

UK/US sizes are the primary reference. Girls' sizes 26 and 28 feature a medium leg height for a more conservative fit. Women's sizes 30 and above feature a high leg height. Size 30 spans Girls 14 and Womens 06 AUS.

Fit Notes — AMANZI Tie Back One Piece
  • Size based on your bust and waist measurements. The fully adjustable tie back straps allow fine-tuning of the fit once the correct size is selected.
  • Girls' sizes 26 and 28 feature a medium leg height for a more conservative fit. Women's sizes 30 and above feature a high leg height for a performance-focused fit.
  • The wide open back follows the natural contours of the body — the back should sit flat without gaping, and the straps should cross comfortably between the shoulder blades.
  • Full front and back lining provides modesty and support throughout training and active use in pool and surf environments.
  • Made from AMANZI Armor chlorine-resistant fabric — rinse in cold fresh water after every session and allow to dry naturally away from direct sunlight.
  • Unsure? Contact our team or call +44 1827 330600.
Frequently Asked Questions — AMANZI Tie Back One Piece

Measure your bust and waist in centimetres and match to the size table above. UK/US sizing is the primary reference — AUS, D, and F equivalents are also shown. If your measurements suggest different sizes, prioritise the bust measurement. The adjustable tie back straps allow additional fine-tuning once the correct size is found. Speak to a member of staff at Allens if you are unsure.

Girls' sizes 26 and 28 feature a medium leg height for a more conservative fit, suitable for younger swimmers. Women's sizes 30 and above feature a high leg height for a more performance-oriented fit. If you are buying for a younger swimmer transitioning into women's sizing, this is worth considering when choosing between sizes 28 and 30.

Yes. The AMANZI Tie Back One Piece is designed for both pool and surf use. The fully adjustable straps and ergonomic open back provide a secure and comfortable fit for active movement in all water environments. The chlorine-resistant fabric also performs well in salt water and with regular open water use.

Yes. The thin tie back straps are fully adjustable, allowing you to customise the fit to your shoulder length and preference. Once adjusted, ensure the knot is secure before entering the water. The adjustable straps make the Tie Back a versatile choice across a range of body shapes within each size.

Rinse in cold fresh water after every use to remove chlorine, salt, and sunscreen. Allow to dry naturally away from direct sunlight — do not tumble dry or wring. The AMANZI Armor chlorine-resistant fabric and 100% polyester lining are designed for regular use and will maintain their shape and colour with proper care.

Yes. The size range starts at size 26 (Girls 10 AUS) and covers girls' sizes through to size 28 (Girls 12 AUS), with a medium leg height in these sizes for a more age-appropriate fit. Women's sizing begins at size 30. Size based on bust and waist measurements using the table above.