The Rip Curl Kids Omega 3/2mm FL Back Zip Steamer is a wetsuit designed to provide optimal comfort and protection for young surfers. With a thickness of 3/2mm, this suit offers full coverage in 2mm neoprene, making it perfect for mid-season surfing in Australia. The 3mm thickness in the torso and legs, combined with 2mm in the arms and stretch panels, ensures the right balance of warmth and flexibility. The steamer style of this wetsuit covers the body from neck to ankle, providing superior warmth. Made from a mix of E3 and E5 neoprene, this suit offers exceptional stretch and warmth without the hefty price tag. The flatlock seam construction is not only highly durable but also cost-effective, although it may allow some cold water to enter through the pinholes created during stitching. The back zip entry system makes it easy to put on and take off the wetsuit, although it restricts the expansion of the back panel which is crucial for flexibility during surfing. In QLD you can definitely get away with 2mm in winter. - 3mm in the torso and most of the legs, 2mm - full coverage in 2mm, the midway mark of surfing neoprenes in Australia and the perfect mid-season thickness for most of us. In QLD you can definitely get away with 2mm in winter. in the arms and major stretch panels. 3/2s are the go to wetsuit thickness QLD and Northern NSW winters but questionable in Victoria, where 4/3s are the standard. Style: Steamer - the fullsuit, covering neck to write to ankle and the warmest option short of a hooded steamer. Rubber: E5 & E3 - a mix of E3 and E5 neoprene, few years ago E5 was the stretchiest neoprene on the market and thanks to Rip Curl's material trickle down you can now revel in once top-tier flexibility and warmth without the price. Seam: Flatlock Seam - I'd bet there'd be enough flatlock stitch laid in the history of wetsuits to cover the distance of here to the moon and back, and for good reason. It's extremely durable, almost 2D and is the most cost effective seam out there. But bear in mind the many pinholes created in the stitching process creates plenty of passages for cold water to enter the suit. Zip: Back Zip - it's a zip and its on your back, but to elaborate (because that's my job) the backzip has spanned the entire history of wetsuits and is the easiest system to use in terms of entry/exit. The downside to back zips is that it inhibits expansion of the back panel because the zip itself doesn't stretch - back panel stretch is vital when standing up on a surfboard as there is a great deal of back stretch when tucking your knees under. Not sure what these terms mean?