Fourth Element X-Core Men's Vest
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Delivery Information
Delivery Information
Delivery Information
We offer free tracked UK standard delivery on orders over £50.
Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.
International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.
Estimated delivery times are shown during checkout and reflect your chosen delivery method. More Details
60 Day Returns
60 Day Returns
Returns Information
If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!
Mike's Dive Store offer an extended returns policy of 60 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!
Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return. More Details
Returning To Chiswick Store
We want to make your shopping experience as seamless and enjoyable as possible, even when it comes to returns. That’s why we offer hassle-free returns at our Chiswick store. But there’s more—when you visit to make a return, you can also pre-order items to be available for collection. This means we’ll have a range of sizes ready for you to try on, ensuring you find the perfect fit before leaving the store.
Shop with Confidence, Wherever You Are
To make things even easier, we offer complimentary video consultations with our expert team. Whether it’s before or after your purchase, our specialists can guide you through sizing, fit, and styling—all from the comfort of your home. It’s like having your own personal VIP shopping experience, tailored just for you.
From returns to reorders, we’re here to help you find exactly what you need with zero stress.
Book Video Consultation: Book Now
Help & Support
Help & Support
Need Help?
Our expert diving team is here to assist with your order, sizing, or product selection. We're divers ourselves, ready to support you!
Chat Hours:
Monday - Friday: 09:00 AM - 05:50 PM GMT
Prefer a call back? Just request it through the chat bubble!
Store Location
Mike's Dive Store
113 Power Rd, Chiswick, West London, W4 5PY
Local: (020) 8994 6006
Store Hours
Mon - Fri: 10 AM - 6 PM
Sat: 10 AM - 5 PM
Sun: Closed
Bank Holidays: Store & Warehouse Closed (no dispatch)
Online Video Consultations
Unable to visit us? Book a live video consultation for tailored advice on equipment, fitting, or specialized gear. Get expert guidance from our team, face-to-face. Book Now
For more answers, visit our FAQs.
Use these size guides to find the best fitting size for your Fourth Element Undersuit garments for you. Please be aware that not all sizes are available in all products. See individual product pages for size availability. Please contact us if you have any questions or require further assistance with sizing.
Please note that not all sizes are available in every garment.
MENS SIZE CHART
| Sizes | Height | Chest | Waist | Inside Leg* | ||||
|---|---|---|---|---|---|---|---|---|
| Inches | Cm | Inches | Cm | Inches | Cm | Inches | Cm | |
| XS Short | 5'3"-5'6" | 161-169 | 30-34" | 76-86 | 23-27" | 58-68 | 28.5-30.5" | 73-77 |
| XS | 5'5"-5'8" | 165-172.5 | 30-34" | 76-86 | 23-27" | 58-68 | 30-31.5" | 76-80 |
| S Short | 5'5"-5'8" | 165-172.5 | 34-38" | 86-96 | 27-30.5" | 68-78 | 30-31.5" | 76-80 |
| S | 5'7"-5'10" | 170-178 | 34-38" | 86-96 | 27-30.5" | 68-78 | 31-32.5" | 79-83 |
| S Tall | 5'9"-6'0" | 175.5-183 | 34-38" | 86-96 | 27-30.5" | 68-78 | 32.5-34" | 82-86 |
| M Short | 5'7"-5'10" | 170-178 | 38-41.5" | 96-106 | 30.5-34.5" | 78-88 | 31-32.5" | 79-83 |
| M | 5'9"-6'0" | 175.5-183 | 38-41.5" | 96-106 | 30.5-34.5" | 78-88 | 32.5-34" | 82-86 |
| M Tall | 5'11"-6'2" | 180.5-188 | 38-41.5" | 96-106 | 30.5-34.5" | 78-88 | 33.5-35" | 85-89 |
| L Short | 5'9"-6'0" | 175.5-183 | 41.5-45.5" | 106-116 | 34.5-38.5" | 88-98 | 32.5-34" | 82-86 |
| L | 5'11"-6'2" | 180.5-188 | 41.5-45.5" | 106-116 | 34.5-38.5" | 88-98 | 33.5-35" | 85-89 |
| L Tall | 6'1"-6'4" | 185.5-193 | 41.5-45.5" | 106-116 | 34.5-38.5" | 88-98 | 34.5-36" | 88-92 |
| XL Short | 5'11"-6'2" | 180.5-188 | 45.5-49.5" | 116-126 | 38.5-42.5" | 98-108 | 33.5-35" | 85-89 |
| XL | 6'1"-6'4" | 185.5-193 | 45.5-49.5" | 116-126 | 38.5-42.5" | 98-108 | 34.5-36" | 88-92 |
| XL Tall | 6'3"-6'6" | 190.5-198 | 45.5-49.5" | 116-126 | 38.5-42.5" | 98-108 | 36-37.5" | 91-95 |
| XXL Short | 6'1"-6'4" | 185.5-193 | 49.5-53.5" | 126-136 | 42.5-46.5" | 108-118 | 34.5-36" | 88-92 |
| XXL | 6'3"-6'6" | 190.5-198 | 49.5-53.5" | 126-136 | 42.5-46.5" | 108-118 | 36-37.5" | 91-95 |
| XXXL Short | 6'3"-6'6" | 190.5-198 | 53.5-57.5" | 136-146 | 46.5-50.5" | 118-128 | 36-37.5" | 91-95 |
| XXXL | 6'5"-6'8" | 195.5-203 | 53.5-57.5" | 136-146 | 46.5-50.5" | 118-128 | 37-38.5" | 94-98 |
WOMENS SIZE CHART
| Sizes UK | Sizes USA | Height | Chest | Waist | Hips | Inside Leg* | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | Cm | Inches | Cm | Inches | Cm | Inches | Cm | Inches | Cm | ||
| 6 X Short | 4 X Short | 5'1"-5'4" | 155-162.5 | 27-30" | 68-76 | 20-23" | 51-59 | 30-33" | 76-84 | 26.5-28" | 67-71 |
| 6 Short | 4 Short | 5'2"-5'5" | 157.5-165.5 | 27-30" | 68-76 | 20-23" | 51-59 | 30-33" | 76-84 | 27-28.5" | 69-73 |
| 6 | 4 | 5'3"-5'6" | 160-168 | 27-30" | 68-76 | 20-23" | 51-59 | 30-33" | 76-84 | 28-29.5" | 71-75 |
| 8 X Short | 6 X Short | 5'2"-5'5" | 157.5-165.5 | 29 -32.5" | 74-82 | 22.5-25.5" | 57-65 | 32.5-35.5" | 82-90 | 27-28.5" | 70-75 |
| 8 Short | 6 Short | 5'3"-5'6" | 160-168 | 29 -32.5" | 74-82 | 22.5-25.5" | 57-65 | 32.5-35.5" | 82-90 | 28-29.5" | 71-75 |
| 8 | 6 | 5'4"-5'7" | 162.5-170 | 29 -32.5" | 74-82 | 22.5-25.5" | 57-65 | 32.5-35.5" | 82-90 | 28.5-30.5" | 73-77 |
| 10 X Short | 8 X Short | 5'3"-5'6" | 160-168 | 31.5-34.5" | 80-88 | 25-28" | 63-71 | 34.5-38" | 88-96 | 28-29.5" | 71-75 |
| 10 Short | 8 Short | 5'4"-5'7" | 162.5-170 | 31.5-34.5" | 80-88 | 25-28" | 63-71 | 34.5-38" | 88-96 | 28.5-30.5" | 73-77 |
| 10 | 8 | 5'5"-5'8" | 165-173 | 31.5-34.5" | 80-88 | 25-28" | 63-71 | 34.5-38" | 88-96 | 29.5-31" | 75-79 |
| 12 Short | 10 Short | 5'5"-5'8" | 165-173 | 34-37" | 86-94 | 27-30.5" | 69-77 | 37-40" | 94-102 | 29.5-31" | 75-79 |
| 12 | 10 | 5'6"-5'9" | 167.5-175 | 34-37" | 86-94 | 27-30.5" | 69-77 | 37-40" | 94-102 | 30.5-32" | 77-81 |
| 12/14 (12 top/ 14 bottom) |
10/12 (10 top/ 12 bottom) |
5'6"-5'9" | 167.5-175 | 34-37" | 86-94 | 29.5-32.5" | 75-83 | 39.5-42.5" | 100-108 | 30.5-32" | 77-81 |
| 14 Short | 12 Short | 5'6"-5'9" | 167.5-175 | 36-39.5" | 92-100 | 29.5-32.5" | 75-83 | 39.5-42.5" | 100-108 | 30.5-32" | 77-81 |
| 14 | 12 | 5''7"-5'10" | 170-178 | 36-39.5" | 92-100 | 29.5-32.5" | 75-83 | 39.5-42.5" | 100-108 | 31-32.5" | 79-83 |
| 16 Short | 14 Short | 5''7"-5'10" | 170-178 | 38.5-41.5" | 98-106 | 32-35" | 81-89 | 41.5-45" | 106-114 | 31-32.5" | 79-83 |
| 16 | 14 | 5'8"-5'11" | 172.5-180 | 38.5-41.5" | 98-106 | 32-35" | 81-89 | 41.5-45" | 106-114 | 32-33.5" | 81-85 |
| 18 Short | 16 Short | 5''7"-5'10" | 170-178 | 41-44" | 104 -112 | 34.5-37.5" | 87-95 | 44-47" | 112-120 | 31-32.5" | 79-83 |
| 18 | 16 | 5'8"-5'11" | 172.5-180 | 41-44" | 104 -112 | 34.5-37.5" | 87-95 | 44-47" | 112-120 | 32-33.5" | 81-85 |
| 20 Short | 18 Short | 5''7"-5'10" | 170-178 | 43.5-46.5" | 110-118 | 36.5-40" | 93-101 | 46.5-49.5" | 118-126 | 31-32.5" | 79-83 |
| 20 | 18 | 5'8"-5'11" | 172.5-180 | 43.5-46.5" | 110-118 | 36.5-40" | 93-101 | 46.5-49.5" | 118-126 | 32-33.5" | 81-85 |
SOCK SIZE CHART
| Unisex Sizes | UK | US | EU |
|---|---|---|---|
| XS | 3-4 | 4-5 | 35-37 |
| S | 5-6 | 6-7 | 38-40 |
| M | 7-8 | 8-9 | 41-42 |
| L | 9-10 | 10-11 | 43-44.5 |
| XL | 11-12 | 12-13 | 46-47 |
| XXL | 13-4 | 14 - 15 | 48-49 |
The Fourth Element X-Core Vest is their answer to the heated vest but without the wires and batteries. The X-Core Vest is designed to be worn beneath their Arctic or Halo undergarments (or another undersuit) to provide extra thermal protection to the level that, in most cases, an electric vest isn't even needed.
The Fourth Element X-Core Vest Men's works best when worn over a base layer such as the Fourth Element J2 or Xerotherm, but it also is worn next to the skin. The sleeveless design ensures that you maintain complete freedom of movement, and the four-way stretch fabric fits snugly without being restrictive.
The Fourth Element X-Core Vest Men's is made with REPREVE® - a fibre made from recycled post-consumer waste, including used plastic bottles. Plastic is removed from the waste stream and prevented from reaching the ocean. 76% of the fibre composition of X-Core is recycled polyester.
The Polartec® fabric used in X-Core is manufactured to the highest environmental standards. It has Blue Sign® and Oeko-Tex® certification to indicate that harmful chemicals are minimised or eliminated, and that wastewater is treated to ensure its purity before being released from the factory.
This garment is machine washable to make cleaning easy. It is recommended that you use Fourth Element Sub30 Technical Garment Wash to ensure the garment maintains its thermal and fast-wicking properties. Sub30 is also an environmentally friendly washing solution for technical fabrics.
FEATURES:
- Exceptional warmth
- It contains 76% recycled polyester
- Four-way stretch fabric for a snug fit
- Sleeveless design - complete freedom of movement for valve shutdowns
- Additional thermal layer on chest panel
- Perfect next-to-skin or over a baselayer
- Fast wicking fabric keeps the wearer drier and warmer
- Heavyweight Polartec® Power Stretch®
- Blue Sign® and Oeko-Tex® certified
- Odour resistant
- Machine washable