Is a medium mattress good for side sleepers?

Medium suits many side and combination sleepers, but lighter side sleepers may want more pressure relief at the shoulder and hip. Heavier side sleepers often prefer a softer top layer.

How does a 10-inch hybrid compare with a 12-inch one?

The extra two inches usually mean more foam and deeper cushioning, which helps heavier sleepers. A 10-inch hybrid is lighter and easier to move but firmer under weight.

Does the coil core reduce motion transfer?

Pocketed coils, where each spring moves on its own, limit motion better than a continuous coil system. A partner's movement is felt less, though not as little as on all-foam.

What size is a king mattress?

A king is 76 by 80 inches, the same footprint as two twin XL beds side by side. Check your room and frame before ordering, since it needs a king base or adjustable frame.

Do I need a box spring under it?

A hybrid can sit on a slatted base, platform bed or adjustable frame. A box spring is optional and mainly adds height; a solid, supportive foundation matters more.