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Description
xFastskin HyperSpark: Your journey to unstoppable starts here
Take your race day performance to the next level wearing the new Fastskin HyperSpark Openback Kneeskin in Black. Our newest Fastskin race suit is designed for speed and comfort with flexible knitted fabric and flatlock seams. Sewn dual-layer inner panels provide low-level compression at the core and legs, so you can conquer the competition in style and comfort. Flexible, low-profile comfort straps and an open back allow a full range of arm and shoulder mobility, ensuring nothing holds you back on your path to the podium.
This product has been fully approved by World Aquatics.
Features:
This suit is intended for Competitive Use Only - Not recommended for Training
Shipping & Returns
xFree delivery on all orders over £20.
For orders below £20, delivery charges will be displayed at checkout.
The total order value, including any deals or discounts (such as a discount code), must be over £20.
Free in store collection is available. Simply choose this option at checkout and pick up your order at our store.
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 £20. 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.
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).
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.
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.
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.
If you have any questions about delivery, please contact us.
Size chart
This size guide covers the Speedo Fastskin HyperSpark Kneeskin — a World Aquatics approved and 12U Race Legal competition kneeskin available in both junior (sizes 18–24, ages 7–14) and adult (sizes 26–32) sizing. The HyperSpark is designed to offer fast and comfortable racing for swimmers at every level, from young competitors entering their first tech suit to adult club and county swimmers looking for a race-ready suit with a comfortable, unrestricted fit.
Built from 79% recycled nylon and 21% Lycra Xtra Life Elastane, the HyperSpark Kneeskin features flexible low-profile comfort straps that allow a full range of movement in the shoulders and arms, strategically placed dual lining to provide optimal range of motion and low-level compression for the core and legs, and flexible knitted fabric with flatlock seams designed for fast and comfortable racing. The open back style provides great freedom of movement throughout competition. All measurements are body measurements taken from your own body, not garment measurements.
Shop Speedo Kids Racing Kneesuits → Shop Speedo Womens Racing Kneesuits →
To find the correct Speedo Fastskin HyperSpark Kneeskin size, use a soft measuring tape and take all measurements directly against the skin. For junior sizes, age is shown as a guide only — always use body measurements, as children develop at very different rates. Use the hip measurement as the primary guide.
Note: For junior sizes (18–24), age ranges are a guide only. Always use body measurements to select the correct size. Adult sizes (26–32) are sized by body measurements only.
| Size 18 | Size 20 | Size 22 | Size 24 | Size 26 | Size 28 | Size 30 | Size 32 | |
|---|---|---|---|---|---|---|---|---|
| Age (guide only) | 7–8 yrs | 9–10 yrs | 11–12 yrs | 13–14 yrs | Adult | Adult | Adult | Adult |
| Body Measurements | ||||||||
| Chest cm | 63.5–68.5 | 66–71 | 68.5–74 | 73.5–77.5 | 79.0–82.5 | 84.0–87.5 | 89.0–93.0 | 94.0–98.0 |
| Waist cm | 56–60 | 58–62 | 60–63.5 | 62.0–63.5 | 65.0–66.0 | 67.5–70.0 | 71.0–75.0 | 76.0–80.0 |
| Hip cm | 70–74 | 72–76 | 74–80 | 81.5–85.0 | 86.5–90.0 | 91.5–95.5 | 96.5–100.5 | 101.5–105.5 |
| Size 18 | Size 20 | Size 22 | Size 24 | Size 26 | Size 28 | Size 30 | Size 32 | |
|---|---|---|---|---|---|---|---|---|
| Age (guide only) | 7–8 yrs | 9–10 yrs | 11–12 yrs | 13–14 yrs | Adult | Adult | Adult | Adult |
| Body Measurements | ||||||||
| Chest inches | 25–27 | 26–28 | 27–29 | 29–30.5 | 31–32.5 | 33–34.5 | 35–36.5 | 37–38.5 |
| Waist inches | 22–23.5 | 23–24.5 | 23.5–25 | 24.5–25 | 25.5–26 | 26.5–27.5 | 28–29.5 | 30–31.5 |
| Hip inches | 27.5–29 | 28.5–30 | 29–31.5 | 32–33.5 | 34–35.5 | 36–37.5 | 38–39.5 | 40–41.5 |
Junior sizes (18–24): ages shown are a guide only — always use body measurements. Adult sizes (26–32): sized by body measurements only. All measurements are body measurements, not garment measurements.
Watch our step-by-step guide to taking accurate body measurements for the perfect Speedo Fastskin HyperSpark Kneeskin fit.
Yes. The Speedo Fastskin HyperSpark Kneeskin is fully approved by World Aquatics (WA) and is legal for use in all sanctioned competitive swimming events. It is also 12U Race Legal, meaning it is approved for use in competitions for swimmers under 12 years of age where certain higher-compression Fastskin suits may not be permitted. Always check with your event organiser or club for any local age group rules regarding tech suits in competition.
12U Race Legal means the suit has been certified as suitable for use in competitions for swimmers aged 12 and under, where stricter rules apply to the type of tech suit that can be worn. Some higher-compression Fastskin suits, such as the LZR Pure Intent 2 or LZR Pure Valor 2, may not be permitted in under-12 competitions at certain events. The HyperSpark's low-level compression and flexible knitted construction make it compliant for these events. Always verify with your event organiser before competition.
Yes. The Speedo Fastskin HyperSpark Kneeskin is available in both junior sizing (sizes 18–24, approximately ages 7–14) and adult sizing (sizes 26–32). Both ranges use the same technology and construction. Junior ages are a guide only — always use body measurements to select the correct size regardless of whether you are buying for a junior or adult swimmer.
Always select by body measurements. For junior sizes, the age ranges shown are a guide only — children develop at very different rates and age alone is not a reliable indicator of the correct size. Measure the chest, waist, and hip and compare to the sizing table above, using the hip measurement as the primary guide. Speak to a member of staff at Allens if you are unsure.
The HyperSpark Kneeskin should feel firm but comfortable — noticeably snugger than a training suit but without the high compression of suits like the LZR Pure Intent 2. The flexible low-profile comfort straps should allow a full range of shoulder movement with no pulling or rubbing, the flatlock seams should lie flat against the skin, and the suit should be completely wrinkle-free when correctly fitted. It is designed to be worn comfortably throughout a full day of competition.
The HyperSpark sits at the entry level of the Speedo Fastskin racing range. It uses a flexible knitted fabric with flatlock seams and low-level compression dual lining, making it the most comfortable and least restrictive of the Fastskin kneeskins. The LZR Ignite offers moderate compression with a softer Fastskin construction, while the LZR Pure Valor 2 and LZR Pure Intent 2 offer progressively higher compression with advanced water-repellent coatings for higher-level competition. The HyperSpark is also the only Fastskin kneeskin that is 12U Race Legal.
The Speedo Fastskin HyperSpark Kneeskin is suited to all competitive swimming events and all four strokes. It is ideal for junior swimmers competing at club and county level, adult swimmers entering tech suit competition for the first time, or any swimmer who wants a race-legal kneeskin with a comfortable fit that can be worn throughout a long competition day.
The HyperSpark Kneeskin is a competition racing suit and is not designed for regular training use. Using it for training will degrade the fabric and shorten the lifespan of the suit. For training, Speedo offer a wide range of junior and adult training swimsuits. Reserve the HyperSpark for races and competition warm-ups to maintain its performance and durability.
The main body of the Speedo Fastskin HyperSpark Kneeskin is made from 79% recycled nylon and 21% Lycra Xtra Life Elastane. The recycled nylon construction makes it a more sustainable choice without compromising on race performance. The flexible knitted fabric with flatlock seams is specifically designed for fast and comfortable racing across a full competition day.
Rinse the suit thoroughly in cold fresh water immediately after every use to remove chlorine and salt. Do not machine wash, tumble dry, iron, or dry-clean. Store the suit flat and dry, away from direct sunlight. Avoid contact with sun cream or petroleum-based products. Regular care after each use is essential to maximise the lifespan of the suit.
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