The short answer for a Sphynx
A Sphynx suits a tall vertical post wrapped in tightly woven sisal fabric, standing on a base heavy enough that the post never rocks. Most cats scratch through a layer of fur; a Sphynx scratches skin-to-surface, and that single fact drives every choice below. Loose carpet loops can snag against bare skin and hold onto the natural oils this hairless breed produces, while a flat-woven wrap gives claws a clean grip and wipes down without a fuss. Height matters too: a post shorter than the cat's full stretched length invites the Sphynx to take its stretching routine to the sofa instead.
Why bare skin changes the surface choice
A Sphynx produces skin oils that a coated cat's fur would absorb, and those oils end up on whatever the cat rubs and scratches. On a scratching post, that means the wrap gradually darkens and picks up grime in a way a Persian's post never would. A removable, washable wrap or a surface you can sponge clean keeps the post hygienic without replacing the whole unit. Bare skin is also quicker to show friction irritation, so run your palm over a candidate wrap before buying: if it feels scratchy against your own skin, it will feel harsher against a Sphynx's flank when the cat leans its weight in mid-scratch. Sisal fabric, woven flat rather than twisted into rope, passes that palm test while still shredding satisfyingly under claws.
Stability and height for a full-body stretcher
A Sphynx is a muscular, surprisingly solid cat that scratches with commitment, planting hind feet and pulling down hard. A lightweight post that slides or tips teaches the cat the post is unreliable, and an unreliable post gets abandoned. Look for a wide, weighted base and a post that does not flex when you push its top sideways with one hand. The top of the post should sit above the point the cat's front paws reach at a full stretch, so measure your Sphynx mid-stretch against a wall if you are unsure. Place the post in a warm, lived-in room rather than a chilly corner: a hairless cat choosing between a cold spare room and a sunny armchair will pick the armchair every time, and the post only works if the cat actually visits it.
One vertical post, one flat option
A Sphynx household does well with a second, horizontal scratcher alongside the tall post. Some cats prefer to scratch flat, raking forward like they are digging, and a Sphynx that ignores the vertical post may take immediately to a flat sisal pad near its sleeping spot. Put the flat pad where the cat already naps, since scratching peaks right after waking. If your Sphynx still tests the furniture, move the post directly beside the targeted chair leg for a week rather than scolding; proximity usually settles the argument. Check claws weekly while you are at the post, because a hairless cat's claws and the skin folds around them collect the same oils, and a quick gentle wipe keeps both comfortable.
When scratching changes mean more than a new post
A Sphynx that suddenly scratches its own skin rather than the post, or whose skin turns red and irritated around the shoulders and neck, needs a veterinarian's eyes rather than new equipment, because bare skin shows irritation early and clearly. Likewise, a cat that stops scratching altogether and goes quiet has changed a core daily behaviour, and that change is worth a check-up. Ordinary post-shredding, by contrast, is healthy and should be encouraged, not redirected away. Once you find the wrap and height your cat loves, record the details where the whole household can see them: KinsLe's Family Sharing holds your Sphynx's profile and care notes in one shared place, so the next post anyone buys matches the texture already proven in your home.