Apeks ThermiQ 5mm Men’s Full Wetsuit

Apeks 5mm ThermiQ Men's Full Wetsuit: A Thermally Active Suit Built for Serious Recreational and Working Divers

The Apeks 5mm ThermiQ is a men's full-length wetsuit built around one specific problem: staying warm enough, for long enough, across multiple dives.

If you are a recreational diver who regularly dives in cooler waters, or someone who does back-to-back dives and notices the cold catching up with you by the second or third entry, this suit is worth a serious look.

It is not a budget entry-level suit. It is built with materials and construction details that matter once you are diving regularly and want gear that performs consistently rather than just adequately.

The Neoprene and Why It Matters

Most wetsuits are made from petroleum-based neoprene. The ThermiQ uses limestone-based neoprene, which is a meaningfully different material.

Limestone neoprene tends to be more flexible than its petroleum equivalent, and it has better environmental credentials. In this case, Apeks takes that further: the suit is made from recycled car tires and laminated with material from recycled bottles. If the environmental footprint of your gear matters to you, that is a genuine difference, not a marketing footnote.

The flexibility benefit is practical too. A 5mm wetsuit can feel stiff and restrictive, especially across the shoulders and chest. The limestone neoprene in the ThermiQ is described as super-stretchy, which means you are not fighting the suit every time you reach for a valve, adjust your BCD, or fin hard against a current.

The Graphene Lining and Heat Distribution

This is the feature that sets the ThermiQ apart from a standard 5mm suit.

The interior is lined with a Graphene fleece. Graphene is an excellent thermal conductor, and Apeks uses it here specifically to redistribute body heat across the suit rather than letting it pool in warm spots like under your arms while your chest stays cold.

The result, according to Apeks, is an average body temperature increase of 2 degrees Celsius compared to a standard suit. That is a meaningful difference on a long dive or a cold day between dives.

In practical terms, it means the suit is working to use the heat your body already generates more efficiently. You are not just insulated; you are more evenly insulated.

Entry, Sealing, and Fit Details

The ThermiQ uses a front zipper rather than a back zip. Front-zip suits let you get in and out without a buddy's help, and they tend to create a better seal across the back, which reduces flushing (the term for cold water rushing through the suit and replacing the warm water layer your body has built up).

Apeks has also reduced water intrusion at the zips and seals generally, which supports warmth retention over longer dives. Liquid-sealed seams contribute to this: the internal seams are sealed so water has fewer pathways into the suit.

The shoulders are non-slip and abrasion-resistant. This is a small detail that matters if you dive with a BCD regularly. A BCD that shifts around on slippery neoprene is uncomfortable and distracting. Textured shoulders keep it sitting where you put it.

Practical Storage

There is a zipped thigh pocket for accessories. It sits flush enough that it does not disrupt the suit's profile in the water. Useful for a small torch, a surface marker buoy spool, or a dive slate.

What This Suit Is Designed For

Apeks lists the intended activities as scuba diving and military and rescue diving. That second category tells you something about the construction standard. A suit rated for professional working dives in demanding conditions is built to a durability level above what most recreational suits target.

The abrasion-resistant material and liquid-sealed seams reflect that. This is a suit intended to last through regular use in real conditions, not occasional holiday dives.

Who This Suit Is Not Ideal For

If you dive primarily in warm tropical water, 5mm is more suit than you need and you will overheat.

If you are a woman, this suit is cut and sized for men only.

If you are looking for a first wetsuit for casual snorkeling or very occasional dives, the ThermiQ is built to a specification beyond what that use case requires.

A Quick Summary of What You Get

The Apeks ThermiQ is a well-considered suit for the diver who takes thermal protection seriously and wants a material choice they can feel good about. The Graphene lining and limestone neoprene are not gimmicks; they address real problems that 5mm divers face, and the construction standard backs up the performance claims.