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Description
xOur World Aquatics-approved Fastskin Junior Endurance®+ Max Openback Kneeskin emulates the style lines of our popular LZR Valor suit, so our young swimmers can look and feel like their swim heroes as they step up to the blocks. Designed specifically for young swimmers, the suit features high-energy colours. Its open-back style and 4-way stretch fabric ensure comfort and freedom of movement, allowing junior athletes to focus on their race. Built to last, it’s chlorine resistant, quick-drying and designed to withstand everything their race day swim sessions throw at it.
Product Features:
• World Aquatics Approved
• Four Way Stretch Technology
• Chlorine Resistant Fabric
• Quick Dry
• Open Back Style
• Bold Colours
• Endurance+ Max
Shipping & Returns
xUK Delivery Options
🚚 Free UK Delivery
Free delivery on all orders over £40
For orders below £40, delivery charges will be displayed at checkout.
The total order value, including any deals or discounts (such as a discount code), must be over £40.
📮 Royal Mail
📦 UPS
🚀 DHL Courier
🏪 In Store Collection
Free in store collection is available. Simply choose this option at checkout and pick up your order at our store.
🕐 Delivery Times
EU Delivery Options
✈️ FedEx
International Delivery Options
🌍 International Shipping
📮 Royal Mail
🚀 DHL Courier
Important Information
FAQs
We offer several delivery options, including Standard Delivery, Express Delivery, and International Shipping.
Delivery times depend on the option you choose at checkout. Standard Delivery typically takes 2–3 days, while Express Delivery is usually delivered within 1–2 days. International delivery times may vary by location.
Delivery costs vary based on the shipping method and destination. Standard delivery starts at £4.99, and express delivery starts at £14.99. International shipping rates are calculated at checkout.
Yes, we offer free delivery on orders over £40. Terms and conditions apply.
Yes, once your order is dispatched, you'll receive a tracking number via email to monitor its progress.
Yes, we deliver to many countries worldwide. Delivery times and costs for international orders are shown at checkout.
If your order hasn't arrived within the estimated timeframe, please contact us with your order number, and we'll assist you.
If you're not available, the courier will typically leave a card with instructions on how to rearrange delivery or collect your parcel.
We can make changes to your delivery address if your order hasn't been dispatched. Please contact us as soon as possible.
If your order arrives damaged or is incomplete, please contact our customer service team as soon as possible with photos and your order number, and we'll resolve the issue promptly.
Currently, we don't deliver to PO Boxes and BFPO addresses. Please check specific delivery options at checkout.
For express or special deliveries, you may be able to select a preferred delivery date at checkout.
Returns Policy
We offer a free returns service. We advise that customers keep either proof of posting or a receipt as we cannot be held accountable for items lost being returned to us.
Please note that this returns policy does not cover items such as special order swimwear, customised products and products ordered specifically at the request of a customer. Products such as these cannot be returned (unless faulty).
Free UK Returns
If you are unhappy with your purchase for any reason, then we will gladly refund you within 28 days of purchase. Simply click on the link below to begin the returns policy:
ALLENS OF KINGSBURY RETURNS
Returns outside of the UK are at the buyer's cost. Please return to us at the address below.
Please ensure that you have completed a CN22 Customs declarations form and that this has been clearly marked as being Returned Goods. Please mark the return parcel on the outside clearly as returned goods. Failure to do this could result in Customs charges being applied to the parcel on its return. I regret we cannot accept parcels with customs duties and charges payable — these will be returned to sender.
Non-Faulty Goods
Please return items with the original packaging if possible and to keep hygiene seals on suits, please also include a copy of the invoice received clearly stating on this that you would like a refund for the return.
Please note that we will not accept non-faulty items back that have been worn or without their relevant packaging, labels or stickers.
If you would like to exchange an item for an alternative size, style or item please follow the link to us along with a copy of your invoice, please note on the invoice what item is required as an alternative.
Faulty Goods
In the case of faulty goods, please contact us and provide details of the nature of complaint along with photos and the date of purchase and the care given to product.
In all cases of complaint we will endeavour to substitute faulty goods with an identical replacement, or substitute the goods with ones of similar value. This does not affect your statutory rights, and you may of course choose to have a complete refund if you are not 100% happy.
How to Return an Item
If you have any questions about delivery, please contact us.
Size chart
Our World Aquatics-approved Fastskin Junior Endurance®+ Max Openback Kneeskin emulates the style lines of our popular LZR Valor suit, so young swimmers can look and feel like their swim heroes as they step up to the blocks. Designed specifically for young swimmers, the suit features high-energy colours. Its open-back style and 4-way stretch fabric ensure comfort and freedom of movement, allowing junior athletes to focus on their race. Built to last, it’s chlorine resistant, quick-drying, and designed to withstand everything their race day swim sessions throw at it.
Shop Girls’ Fastskin Kneeskins →
To find the correct size, use a soft measuring tape and take all measurements directly against your child’s skin. Always use body measurements — age is shown as a guide only, as children develop at different rates.
Note: Ages shown in the sizing table are a guide only. Always measure and use body measurements to select the correct size.
| Size 24 | Size 26 | Size 28 | Size 30 | Size 32 | Size 34 | |
|---|---|---|---|---|---|---|
| Age (guide only) | 5–6 yrs | 7–8 yrs | 9–10 yrs | 11–12 yrs | 13–14 yrs | 15–16 yrs |
| Body Measurements | ||||||
| Chest cm | 61 | 66.5 | 72 | 77.5 | 84 | 90.5 |
| Waist cm | 56 | 59 | 62 | 65 | 69 | 73 |
| Hips cm | 64 | 70 | 76 | 84 | 90 | 96 |
| Size 24 | Size 26 | Size 28 | Size 30 | Size 32 | Size 34 | |
|---|---|---|---|---|---|---|
| Age (guide only) | 5–6 yrs | 7–8 yrs | 9–10 yrs | 11–12 yrs | 13–14 yrs | 15–16 yrs |
| Body Measurements | ||||||
| Chest inches | 24 | 26 | 28.5 | 30.5 | 33 | 35.5 |
| Waist inches | 22 | 23 | 24.5 | 25.5 | 27 | 28.5 |
| Hips inches | 25 | 27.5 | 30 | 33 | 35.5 | 38 |
All measurements are body measurements, not garment measurements. Speedo racing suits are designed to fit snugly — if between sizes, we recommend sizing up. Contact Allens if you need guidance.
Measure the chest, waist, and hips in centimetres and match to the size table above. Use chest as the primary measurement. Speedo racing suits are designed to fit snugly, so some compression is expected. If measurements fall between sizes, size up for comfort, particularly for younger swimmers still growing.
Yes. The Fastskin Junior Endurance®+ Max Openback Kneeskin is World Aquatics approved and legal for use in sanctioned competitions. Always check with your club or event organisers to confirm the specific approval requirements for your level of competition.
The Fastskin Junior Endurance®+ is a racing kneeskin, not a training suit. It is designed for competition with a closer, more compressive fit, low-profile flat lock seams to minimise drag, and an open-back cut that mirrors the adult LZR Valor style. It is made from chlorine-resistant Endurance+ Max fabric so it can handle regular training sessions, but its primary purpose is race performance.
The size range covers UK ages 5–6 years (size 24) through to 15–16 years (size 34). Always size based on measurements rather than age alone, as fit can vary considerably between swimmers of the same age.
Yes. Racing kneeskins are designed to fit considerably tighter than training suits. Some resistance when pulling the suit on is entirely normal and does not mean the suit is too small. Once on, the suit should feel compressive but should not restrict breathing or circulation. If the swimmer is uncomfortable in the water, consider sizing up.
Roll the suit from the legs upward, working it gradually up the body rather than pulling from the top. Take care around the seams and fabric panels — do not pull sharply or use fingernails, as this can damage the material. Wetting the suit or the skin slightly can help ease it on. Allow at least 10–15 minutes to put the suit on before racing.
Rinse in cold fresh water immediately after use to remove chlorine and salt. Do not wring, tumble dry, or expose to direct sunlight for extended periods. Lay flat or hang to dry naturally. Avoid sitting on rough pool surrounds while wearing the suit, as this can cause abrasion to the fabric panels.
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