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Product Information
The Women's Long Sleeve Lavacore Top is a three-layer Polytherm thermal garment designed for divers, surfers, and other watersports athletes who want wind and splash protection with neutral buoyancy. It combines a water-repellant outer layer, a windproof breathable middle layer, and a moisture-wicking fleece inner layer, and it carries a UPF 50+ sun rating.
Who it is for
This top suits divers who run cold and want an extra thermal layer under a neoprene wetsuit, as well as surfers, paddlers, and other watersports participants who need a standalone garment that blocks wind chill and surface splash without adding bulk or buoyancy. The soft fleece interior and 4-way stretch fabric are built to sit close to the skin for all-day comfort on the boat or in the water.
Key details
- Tri-laminate construction: water-repellant outer layer, windproof breathable middle layer, fleece inner layer
- UPF 50+ sun protection
- Lightweight 4-way stretch fabric for a close, flexible fit
- Neutrally buoyant, even when wet
- Full underarm gusset for unrestricted arm movement
- Overlapped flatlock seams throughout
- Thumb loops and an extended back panel to keep the shirt from riding up
Compatibility and sizing
The Women's Long Sleeve Lavacore Top can be worn as a standalone exposure garment or layered beneath a neoprene wetsuit. This listing is available in women's sizes 06 and 18.
DiveCatalog.com is an authorized Lavacore dealer and has been a dive shop in Irvine, California since 2003. Call or chat with us if you have questions about sizing or layering this top under your wetsuit.
- Water-repellant outer layer: Flexible, durable layer that sheds surface splash.
- Windproof middle layer: Breathable layer that blocks wind chill while letting moisture escape.
- Fleece inner layer: Soft, moisture-wicking interior that sits close to the skin for warmth.
- 4-way stretch fabric: Lightweight material that moves with the body for a snug, unrestricted fit.
- Neutral buoyancy: Maintains neutral buoyancy even when wet.
- UPF 50+ protection: Built-in sun protection rated UPF 50+.
- Full underarm gusset: Allows a full range of arm movement.
- Overlapped flatlock seams: Used throughout the garment.
- Thumb loops: Help keep sleeves in place.
- Extended back panel: Prevents the shirt from riding up during movement.
| Garment type | Long sleeve top |
| Construction | Tri-laminate: water-repellant outer layer, windproof breathable middle layer, fleece inner layer |
| UPF rating | UPF 50+ |
| Stretch | 4-way stretch |
| Buoyancy | Neutrally buoyant |
| Use | Standalone exposure garment or undergarment beneath a neoprene wetsuit |
| Seams | Overlapped flatlock seams throughout |
| Sizes available (this listing) | 06, 18 |
| Warranty | One year limited warranty on materials and workmanship for original purchases from an authorized Lavacore dealer |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Can I wear the Lavacore Long Sleeve Top under my wetsuit?
Yes. The Women's Long Sleeve Lavacore Top is designed to work as a standalone exposure garment or as an undergarment layered beneath a neoprene wetsuit. Its lightweight 4-way stretch fabric adds warmth through the fleece inner layer, while the outer layer resists surface splash.
Does the Lavacore top offer sun protection?
Yes. The top carries a UPF 50+ rating, which blocks a high percentage of the sun's ultraviolet rays. This makes it useful as a surface layer for multi-sport use in addition to its thermal properties.
What sizes does this Lavacore top come in?
This DiveCatalog listing for the Women's Long Sleeve Lavacore Top is available in women's sizes 06 and 18. If you are unsure which size will fit best, call or chat with DiveCatalog's team for sizing guidance before you order.
Is the Lavacore top buoyant when wet?
The manufacturer states the top remains neutrally buoyant, so it does not add lift when worn alone or under a wetsuit.












