Extreme Watersport

Avatar 901 Undersuit

The Avatar 901 Undersuit is an affordable drysuit thermal layer designed for divers who want warmth, comfort and simplicity without stepping into premium undersuit pricing. Made from soft 450 g/m² recycled SHERPA fleece, it provides reliable insulation for moderate and cold-water diving while remaining flexible and comfortable beneath a drysuit.

Ideal for recreational drysuit diving throughout Melbourne, Victoria and other cold-water environments across Australia, the Avatar 901 includes practical features such as a low collar, flat front zipper, thumb loops, foot straps and a heating system cable opening. It is a strong choice for divers buying their first drysuit undersuit or looking for a budget-friendly thermal layer.

Affordable Thermal Layer Recycled SHERPA Fleece Designed for 6–18°C Water
Avatar 901 Undersuit

Choose Your Size

$449.00
Most Avatar 901 undersuits are stocked by the Australian distributor and are typically dispatched within 2–5 business days. If your preferred size is temporarily unavailable in Australia, it can usually be supplied within approximately 2–3 weeks. Contact us for current stock availability and sizing advice before ordering.
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Product Highlights

Comfortable Cold-Water Warmth at an Accessible Price

The Avatar 901 Undersuit is built for divers who want a warm, comfortable and economical drysuit undersuit. Its SHERPA fleece interior feels soft against the skin while providing dependable insulation for moderate and cold-water diving.

Simple construction, high flexibility and practical drysuit features make it easy to wear beneath a drysuit. Thumb loops and foot straps help keep the undersuit in place during donning, while the heating system cable opening allows compatibility with heated layering setups.

Key Features

Key Features

450 g/m² SHERPA Fleece

Soft recycled fleece with wool-like warmth and comfort for drysuit diving.

Budget-Friendly Drysuit Warmth

A comfortable and functional undersuit for divers seeking an economical thermal layer.

Heating System Ready

Includes a heating cable opening for divers using compatible heated accessories.

Easy Care Design

Machine washable, easy to dry and designed for regular recreational drysuit diving.

Technical Details

Technical Specifications

The Avatar 901 Undersuit is a practical drysuit undersuit designed for recreational divers seeking warmth, flexibility and value. Made from 450 g/m² recycled SHERPA fleece, it provides reliable insulation for moderate and cold-water diving while keeping the design simple, comfortable and easy to maintain.

Material
450 g/m² SHERPA fleece made from recycled plastic bottles.
Recommended Water Temperature
Recommended for approximately 6–18°C, depending on dive duration, drysuit and personal cold tolerance.
Best Suited For
Recreational drysuit diving, entry-level cold-water diving and budget-friendly thermal protection.
Fit Features
Low collar, flat front zipper, thumb loops and wide under-foot straps.
Heating Compatibility
Includes heating system cable opening.
Care Instructions
Machine wash cold at 30°C. Tumble dry low. Do not bleach, iron or dry clean.
Sizing
Available in men’s and women’s standard sizing only.
Made to Measure
Not available. Avatar 901 is supplied in standard sizes only.
Sustainability
Made from 100% recycled plastic bottle-based fleece.
Availability
Most sizes are supplied to order.
Included

What's Included

  • Avatar 901 Undersuit
Size Guide

Need Help Choosing Your Size?

Use the size guide below as a reference before ordering. If you are between sizes or plan to wear additional base layers, contact us and we can help recommend the most suitable fit.

Men’s Size Guide

Avatar 901 Undersuit men’s size guide

Women’s Size Guide

Avatar 901 Undersuit women’s size guide

Why Choose the Avatar 901 Undersuit?

The Avatar 901 Undersuit is designed for divers who want a warm, comfortable and affordable drysuit thermal layer. Built from soft 450 g/m² SHERPA fleece made from recycled plastic bottles, it provides reliable insulation without the higher price of premium technical undersuits.

For recreational divers, new drysuit users and those looking for an economical cold-water diving setup, the Avatar 901 offers the essential features needed for comfort beneath a drysuit.

Built for Melbourne and Australian Cold-Water Diving

Diving around Melbourne, Port Phillip Bay, Victoria and Tasmania often requires dependable thermal protection, even for recreational shore and boat dives. The Avatar 901 is recommended for water temperatures around 6–18°C, making it suitable for many cold-water diving conditions across southern Australia.

Affordable Alternative to Premium Drysuit Undersuits

The Avatar 901 is not designed to compete with expedition-level undersuits such as the SANTI BZ420X or Fourth Element HALO A°R. Instead, it provides a comfortable and accessible option for divers who need reliable warmth for recreational drysuit diving without the cost of a high-end technical thermal system.

Practical Features for Drysuit Diving

Thumb loops and wide under-foot straps help keep the undersuit in place while donning your drysuit, while the low collar and flat front zipper improve comfort. A heating system cable opening also allows the Avatar 901 to be used with compatible heated accessories if additional warmth is required.

Why Buy from Extreme Watersport?

Extreme Watersport supplies genuine Avatar drysuit and thermal products in Australia, supported by practical advice from experienced cold-water divers. Whether you're choosing your first drysuit undersuit or comparing Avatar, Fourth Element and SANTI options, we can help you select the right thermal layer for Melbourne, Victorian and Australian diving conditions.

FAQ

Avatar 901 Undersuit FAQ

Who is the Avatar 901 Undersuit designed for?

The Avatar 901 is designed for recreational drysuit divers who want a comfortable and affordable undersuit for moderate to cold-water diving. It is ideal for divers buying their first drysuit thermal layer or seeking a budget-friendly alternative to premium undersuits.

What water temperature is the Avatar 901 suitable for?

Avatar recommends the 901 Undersuit for water temperatures around 6–18°C, although comfort depends on your drysuit, dive duration, activity level and personal cold tolerance.

Is the Avatar 901 made from recycled materials?

Yes. The Avatar 901 is made from modern SHERPA fleece produced from recycled plastic bottles, offering soft wool-like comfort with a more environmentally conscious construction.

Can I order the Avatar 901 made to measure?

No. Avatar undersuits are supplied in standard sizes only and are not available as made-to-measure products.

Can I use a heating system with the Avatar 901?

Yes. The Avatar 901 includes a heating system cable opening, making it suitable for use with compatible heated accessories as part of a drysuit thermal setup.

Can the Avatar 901 be machine washed?

Yes. The Avatar 901 can be machine washed cold at 30°C and tumble dried on low heat. Do not bleach, iron or dry clean.

Need Help?

Need Help Choosing an Affordable Drysuit Undersuit?

Not sure whether the Avatar 901 is warm enough for your diving? Our team can help you compare it with Fourth Element and SANTI thermal layers to choose the right undersuit for your drysuit, water temperature and budget.

Contact Us for Advice