Compression for running: what it does and how to choose

Compression clothing is everywhere on trails and start lines, and it comes with some big claims. Here is a practical look at what it is, what to expect and what to check before you buy.

What compression actually is

Compression garments are cut and knitted to fit close to the body with a firm, even stretch. That fit keeps the fabric in place, reduces rubbing and gives a supported feeling around the muscles. Research on whether compression improves performance is mixed, so treat it as a comfort and fit choice rather than a shortcut. Many runners like the support on long efforts and the way it keeps pockets and seams from bouncing.

What to look for

• Fit: snug and firm, never painful. You should breathe freely, with no pinching at the waistband, no rolling at the hem and no tingling or numbness.
• Fabric: stretch blends such as polyester and elastane move with you and handle sweat well. Check the composition on the product page.
• Length: shorts for hot days and short sessions, capris and 3/4 lengths for shoulder seasons, full-length pants and tights for cold weather and long runs.
• Features: pockets are worth having on longer runs. Some of our leggings include ventilated mesh pockets designed for trail and triathlon use.

Choosing your size

If you are between sizes, think about how you will use the piece. A close fit works for racing and long runs; go up a size if you want a more relaxed feel for everyday training. Check the sizing details on the product page before ordering.

Care tips

Wash at a low temperature and skip fabric softener, which can coat the fibres and reduce stretch. Let compression pieces air-dry and they will keep their shape for longer.

Start with our running collection, or go straight to pants and shorts or tights and leggings.