Sizing

One ring, most fingers. The band is open at the back and gently adjustable, so a single Magneva ring covers UK J to T (EU 49–61, US 5–9½).

How to adjust it

Hold the band on both sides of the opening and squeeze gently to tighten, or ease the two ends apart to loosen. Work in small movements — a millimetre at a time — rather than one large bend.

Where to wear it

Most people wear it on the index or middle finger of the non-dominant hand. It should sit snug enough not to spin freely, loose enough to turn with a little effort.

Bracelets and necklaces

The bracelet arrives at 21 cm and shortens by removing links — the tool and spare links are in the box. The necklace chain is 45 cm with a 5 cm extender.