Liberty Sport Helmet Spex Kids & Teens Prescription Sports Goggles – Matte Navy, 53mm

The 53mm Liberty Sport Helmet Spex in Matte Navy is the medium size for kids and teens of roughly 10 to 14 — a wrap-style, strap-secured goggle that sits flat under a helmet.

Liberty Sport’s published wording for this frame is that it “meets or exceeds ASTM F803 impact resistance standards for several sports” when glazed with the correct impact-rated lens. ASTM F803 is the test used for sports eye protectors in basketball, racquet sports, football and similar. Liberty Sport also publishes a standard liability note: no eye protector can prevent all injuries, and protection depends on the frame and lens being the right size, correctly fitted and undamaged — which is exactly what our fitting covers.

What sets the Helmet Spex apart: soft rubber end pieces that mould to the face, venting grooves in the eye rim, and a strap that contours over the ears.

It is designed for helmet sports — the strap sits flat under a helmet, and a washable skull cap is included to wear over the goggle and under the helmet to hold it in place.

Liberty Sport is an American family company founded in 1929 in New Jersey. Its Rec Specs sport-protective line launched in 1976, and since 2000 protective sports eyewear has been the company’s whole business. Optic One is a Liberty Sport dispenser in the UAE.

Key details

• Brand: Liberty Sport — Helmet Spex
• Colour: Matte Navy
• Type: Prescription sports goggles, strap
• For: Kids and teens (roughly ages 10–14 — an approximate guide)
• Standard: Meets or exceeds ASTM F803 impact resistance standards for several sports (manufacturer wording)

Size & fit

Lens 53mm · Bridge 17mm · Total width 131mm · Lens height 41mm.

Children’s sizing depends on face size more than age — we strongly recommend an in-store fitting at our Abu Dhabi store, or send us your child’s current frame measurements on WhatsApp. A sports goggle that is too big slides on impact; too small and the strap pinches.

Which lens should you choose?

Sports frames need a lens that will not shatter. Ordinary plastic (CR-39) lenses can crack into sharp pieces when a ball or elbow hits them, so we never fit them in a sports frame. Every lens below is chosen for impact safety first:

• Polycarbonate (standard) — our default sports lens. Very impact-resistant, light, and it blocks UV on its own. The right choice for most prescriptions up to ±6.00.
• Trivex (upgrade, prescriptions up to ±3.50) — the same shatter resistance as polycarbonate, but lighter and with noticeably sharper, clearer optics. Worth it if you wear the goggles for long sessions.
• Tribrid (upgrade, ±3.51 to ±6.00) — for moderate prescriptions. Thinner and lighter than polycarbonate at the same power, while keeping impact resistance. Avoids the thick-edge look on stronger minus powers.
• 1.60 MR-8 photochromic — choose this when you want a lens that darkens outdoors or a tinted finish. Clear indoors, up to around 50% dark in sunlight.
• Polycarbonate Transitions Gen S — the fastest-reacting light-adaptive option in a shatter-resistant material. Up to 70% dark outdoors, fully clear indoors. Ideal for outdoor sport in the UAE sun.
• 1.67 high index (above ±6.00) — for strong prescriptions, a thinner and lighter lens that still sits properly in the frame. It is not impact-rated like polycarbonate or Trivex, so our optometrist will advise on the best balance of thickness and protection for your sport. Available clear, photochromic grey, or with Transitions Gen S.

Prescriptions above ±9.00 are handled personally — send us your prescription on WhatsApp and we will confirm what this frame can take.

For children we fit polycarbonate or Trivex only. Both are the impact-resistant materials recommended for kids’ eyewear; our optometrist will advise which suits your child’s prescription at fitting.

How to order this frame with lenses online

1. Choose your lens type — Clear Lenses or Photochromic Lenses.
2. Enter your prescription exactly as written, including the + and − signs and the axis. The lens selector uses it to show only the lens materials that suit your power.
3. Select your lens — the standard option is pre-set; upgrades are shown alongside with their price.
4. Add to cart and check out. The final price is shown before checkout.

Have your own lab? Tick “Buy Frame Only” below the lens selector to buy the frame on its own. Prefer help? Send your prescription on WhatsApp and we will set it up for you.

Why buy kids’ sports goggles from Optic One

Optic One is a DOH-licensed optical store in Abu Dhabi with free delivery across Dubai and all UAE, and shipping to the GCC and worldwide. Every pair is glazed and checked by our optometrist-led team — lenses are centred to your pupils, which matters more in a curved sports frame than in everyday glasses. Visit our Abu Dhabi store for in-person fitting, or order online with expert support on WhatsApp. Home try-on is available in Dubai and Abu Dhabi. Kids’ goggles only work if they fit properly and stay on during play — we adjust the strap or temples, check the bridge sits right, and give honest advice on size. All Liberty Sport frames are 100% genuine and covered by a 1-year warranty against manufacturer defects.

Frequently asked questions

Why can’t I use my normal glasses lenses in a sports frame?
Standard CR-39 plastic and glass lenses can shatter into sharp pieces on impact. Sports frames are glazed only with polycarbonate, Trivex or Tribrid, which absorb a hit without breaking. Polycarbonate is included as the standard option on this frame.

Polycarbonate or Trivex — which is better for sport?
Both are shatter-resistant. Polycarbonate is the standard and suits most prescriptions. Trivex is lighter with sharper optics, so it is the better choice if you wear the goggles for long sessions or have a light prescription (up to ±3.50). For ±3.51 to ±6.00, Tribrid gives a thinner lens.

Can I get these with lenses that darken in the sun?
Yes. Choose Photochromic in the lens selector: 1.60 MR-8 grey (up to about 50% dark) or polycarbonate Transitions Gen S (faster, up to 70% dark). For prescriptions above ±6.00 the same options come in 1.67 high index.

Does the Liberty Sport Helmet Spex come with a strap?
Yes — the adjustable strap is included and a skull cap for helmet use is in the box.

Will it fit under a helmet?
Yes — Helmet Spex is designed for helmet sports. The strap sits flat and the included skull cap holds the goggle in place under the helmet.

What age does this fit?
Roughly ages 10–14 as a guide, but face size matters more than age. Send us your child’s current frame measurements or a photo on WhatsApp and we will confirm.

I’m not sure what size is right for me. How can I make sure I get the right size?
Use our home try-on service in Dubai and Abu Dhabi: choose the frames you want to compare, try them at home, and keep only the one that fits. You can also send us a photo wearing your current glasses, or the measurements printed inside their temple arm, on WhatsApp and we will tell you which size to order. Visiting Abu Dhabi? Come to the store and we will fit it in person.

Do you deliver to Dubai?
Yes — free delivery across Dubai and all UAE. Home try-on is available in Dubai and Abu Dhabi, and you can visit our Abu Dhabi store for fitting.

Do you ship prescription sports goggles to Saudi Arabia, Oman, Qatar, Kuwait or Bahrain?
Yes. We ship prescription sports goggles to Saudi Arabia, Oman, Qatar, Kuwait and Bahrain, and worldwide. Send us your prescription and frame size on WhatsApp; we glaze the lenses in Abu Dhabi, check the fit, and courier the finished pair to you. Shipping cost and delivery time are confirmed before you pay.

Home try-on terms & conditions