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Nike labels each garment with a fit name rather than leaving you to guess, and that matters more than the size letter. Standard is the everyday cut, Slim sits closer to the body, and Loose and Oversized are cut deliberately roomy — so a Standard large and an Oversized large fit very differently. Many UK shoppers find Nike tops come up slightly smaller than expected, so check the measurements on the listing before ordering.

They are three parts of Nike's FIT fabric system, each solving a different problem. Dri-FIT wicks sweat away from the skin so it evaporates faster, Therma-FIT traps body heat for cold-weather training, and Storm-FIT adds protection from wind and rain. The hangtag or product name tells you which one a garment uses, so match it to when you'll actually wear the piece.

Yes — Tech Fleece is built from bonded lightweight layers rather than the brushed cotton-mix fleece used in standard hoodies and sweatshirts. It gives similar warmth with far less bulk, which is why it drapes closer to the body and layers under a jacket more easily. Standard fleece is softer and heavier, and usually the better choice if you want something to wear on its own.

Wash Dri-FIT and technical fabrics on a cool cycle and skip fabric conditioner entirely. Softener leaves a coating on the fibres that blocks the wicking action, so the garment stops moving sweat and starts holding it. Turn printed and logo pieces inside out, wash at 30°C, and air-dry rather than tumble-drying — heat is what shrinks jersey and cracks printed Swoosh detailing.

Keep the silhouette tidy and the palette plain, and Nike separates work well outside training. Tapered joggers with a plain tee and clean trainers reads as everyday casual, while a Tech Fleece top under an overshirt or a plain coat pulls it towards smart-casual. Stick to black, grey or navy for the pieces you'll wear most, and save the full matching tracksuit for genuinely relaxed days.