Long-sleeve open-back sports playsuit

• Long sleeves with shorts — the exact combination that's missing between seasons, when your arms are cold but your legs aren't.
• A keyhole open back — the cut-out frees the middle of the back.
• Knitted with no side seams — nothing rubs, even under the arms.
• 90% nylon and 10% elastane — the composition stated by the manufacturer, brushed on the inside.

• One-piece sports playsuit, long sleeves
• Open back, built-in shorts
• Seamless knit, brushed on the reverse
• 90% nylon, 10% elastane
• Cold wash, air dry, no tumble dryer or fabric softener

Sizes follow Asian sizing, which runs smaller than French sizes: allow one to two sizes' difference from your usual benchmarks and if in doubt, take the size up. The manufacturer does publish a chart for this item, but without specifying whether its figures are flat widths or full circumferences: we would rather show nothing than a measurement whose meaning we don't know. If you're torn between two sizes, write to us before ordering.

Size conversions and how to measure: see our women's size guide.