Mares X-One Snorkelling Fins

Mares X-One Snorkelling Fins combine an adjustable open heel with a short, two-material blade. They are a practical choice for snorkellers who want a compact fin for holiday packing and an adjustable fit around the heel.

Features and benefits

Channel Thrust blade: the flexible central channel helps direct water along the blade during your kick.
Two-material construction: combines supportive sections with flexible areas for controlled blade movement.
Adjustable heel strap: lets you fine-tune the hold within the selected size range.
Anatomical foot compartment: supports the foot while the open heel allows adjustment.
Textured rubber sole: adds a contact surface under the pocket. Take care on wet surfaces.

X-One fin size guide

Fin size	EU shoe size	UK shoe size
S/M	35–38	2.5–5
M/L	39–43	5.5–9
L/XL	44–47	9.5–12

View the Mares X-One size guide

Choose the X-One fin size independently of any mask size. These are adjustable open-heel snorkelling fins with a barefoot-style pocket. If you want to use thin socks, check the fit before choosing your size; do not assume a dive boot will fit.

Size charts are a guide only; individual fit varies with foot shape. Check both feet and try the fins with any socks you intend to use. The pocket should hold the foot securely without curled toes, pinching or excessive movement. If you are between sizes, ask our Hallam team for fitting help.

Technical Specs

Specification	Details
Model	Mares X-One
Model code	410337
Use	Recreational snorkelling
Fin type	Adjustable open heel
Blade	Short, two-material blade with central Channel Thrust section
Side ribs	Overmoulded spring rubber
Sizes	S/M, M/L, L/XL
Colour	Black
Inclusions	One pair of fins

To measure your feet, place paper against a wall, stand with your heel gently against the wall and mark your longest toe. Measure from the wall to the mark in centimetres. Repeat for the other foot and use the longer measurement. Where a model has no foot-length chart, contact us with that measurement and your usual shoe size rather than using another fin model’s chart.

Care and storage

Rinse in fresh water after use and remove sand from the foot pockets and adjustments. Dry in the shade before storing away from heat and direct sunlight. Store blades flat without bending them or placing heavy items on top. Check straps and buckles before your next swim.

Size	SM – EU 35/38, M/L – EU 39/43, L/XL EU – 44/47

We dispatch orders five days a week, usually within 1–3 days. Standard mainland Australian shipping is $20. Click & Collect from our Hallam store is free once your order is ready.

Large or bulky gear: additional freight charges apply on top of standard shipping: large dive bags $30; long freediving fins $15; long spearguns $20. Scuba tank freight is shown at checkout.
Rural, remote & offshore: rural means anywhere outside metropolitan areas. Carrier availability and additional charges may apply, including for island and territory destinations. Our team will contact you if an extra freight quote is needed.

The available delivery rate for your order is shown at checkout.

Read our full shipping and delivery information →

We offer a 30-day exchange on most unused products within Australia when they are in saleable condition with their original packaging and accessories. Please contact us with your order number before returning an item. Change-of-mind refunds are not offered; this does not limit your rights for faulty products under Australian Consumer Law.

Read our full returns and exchanges policy →

FREE CLICK & COLLECT
Usually ready same day*

Select local pickup at checkout. We will email you when your order is ready. Please wait for your ready-to-collect confirmation before visiting, then bring your confirmation email and photo ID.

Collect from our Hallam store
Factory 4 / 56–60 Hallam South Rd
Hallam VIC 3803

*For items in stock at our Hallam store during opening hours, subject to order processing. Available-to-order and special-order items take longer. Collection is unavailable while the store is closed.

View collection details and opening hours →

Can I collect my order from the store?

Yes. Choose free local pickup at checkout and wait for your ready-to-collect email before visiting our Hallam store. Bring your confirmation and photo ID. See Click & Collect details.

How do I choose the right size?

Use the product's size chart where available and compare your measurements with the guide for that brand. Sizing varies between brands and products. If you are unsure, contact our team before ordering and we can help you choose.

How do I check availability?

Select your required options, such as colour and size, to see availability for that variation. If an item is marked “Available to order”, check the estimated dispatch information. Please contact us before ordering if you need gear by a particular date.

When will my order be dispatched?

Orders are usually dispatched within 1–3 days, subject to stock availability. Available-to-order and special-order products may take longer. Delivery time is separate from dispatch time and depends on your location and the carrier. Read our shipping information.

Can I exchange an item if it does not fit?

We offer a 30-day exchange policy on most unused products within Australia, subject to eligibility. Contact us with your order number before returning an item. Read the exchange conditions and next steps.

Can you help me choose the right gear?

Yes. Call 03 9702 3694 during store hours or email [email protected]. Tell us which product you are considering and how you plan to use it.

View all shopping FAQs →