Description

Hyda Coanda Core Helmet
Available in Stealth….. Sizes S-XL
The HYDA Coanda Core Surf Helmet is a reliable safety performer featuring the same shell design as Coanda Fusion plus HYDA’s trademark mix of protection and versatility—offered at an optimal price point. Developed to protect your head and ears against board collisions, fin injuries, whitewater turbulence, lips to the head, and impact with water, reef, rock, concrete, or sand bottoms. Coanda Core includes many of the same technologies as Coanda Fusion and is the smart choice for beginners and budget conscious surfers, perfect for paddling into your water helmet journey.
The Coanda Core is built specifically for surf. It’s designed to handle surf-specific impacts — like collisions with boards, fins, or the reef — while staying secure in heavy water. It’s lightweight, drains quickly, and doesn’t mess with your balance or hearing. What really sets it apart is its use of the Coanda Effect — a design principle that guides water flow smoothly around the helmet to reduce drag. This makes duck dives easier, reduces turbulence, and helps you move more efficiently through the water.
Certified for Impact Protection
It meets the EN 1385 water sports safety standard — the same certification used for whitewater and wake helmets. We’ve gone further by optimizing the helmet for the unique challenges of surfing: quick duck-dives, hold-downs, and high-speed wipeouts.
How to Measure Your Head for a Helmet
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Prepare a Measuring Tool – Use a flexible measuring tape or a piece of string.
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Position the Tape – Wrap the measuring tape around your head, approximately one inch (2.5 cm) above your eyebrows and ears, ensuring it encircles the widest part of your head.
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Read the Measurement – Note the measurement in centimeters (cm). If using a string, mark the length and measure it against a ruler.
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Repeat for Accuracy – Measure at least twice to ensure consistency.
HYDA Helmet Size Guide Match your head circumference to the appropriate helmet model and size using the chart below:
|
Head Circumference (cm) |
Coanda Fusion |
Coanda Core |
Sentinel S1 |
|
52 – 53 |
S |
||
|
54 – 55 |
S/M |
S |
S |
|
56 – 57 |
S/M |
M |
M |
|
58 – 59 |
L/XL |
L |
M |
|
60 – 61 |
L/XL |
XL |
L |
|
62 |

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