A shower liner does not have to move very far to become annoying. Once the lower half drifts inward, wet plastic starts brushing a leg every time you turn around. Push it back and it may be there again before the shower is over.
There are several explanations for why shower curtains move inward, so blaming the problem entirely on rising warm air is too tidy. What is easier to see is the liner itself. A very light sheet of plastic takes little movement to send it toward the shower.
A heavier shower liner with magnets along the bottom gives that movement more resistance. This one uses 10-gauge PEVA rather than relying on a couple of loose weights clipped onto a thin liner.
Give the Whole Liner Some Weight
Loose weights can help at the bottom corners and still leave a broad section of lightweight plastic bowing inward between them. That is not much improvement when the middle is the part touching your legs.
With a heavier liner, the extra weight is spread across the sheet. Three enclosed magnets add some hold along the bottom as well.
Those magnets are especially useful with a metal tub. Fiberglass and acrylic will not give them anything to grab, so check the tub before counting on that part of the design. The heavier material can still help, but the magnets will simply hang at the bottom.
Once the water is running, the extra weight has a simple job. It helps the bottom of the liner hang down instead of wandering over and clinging to your legs.
A liner that stays farther away also leaves less reason to shuffle around trying to avoid it. If the thing moving is under your feet instead, this shower mat that stays put deals with a different shower annoyance.
Check the Tub Before Relying on the Magnets
The liner measures 72 × 72 inches, a common size for a full shower or tub opening. The measurement is still worth checking against the curtain already hanging there.
For a metal tub, test the side with an ordinary fridge magnet. If it sticks, the liner’s bottom magnets have something useful to hold against. If it does not, buy this for the heavier liner rather than for the magnetic hold.
That is the part that matters when the current liner keeps drifting in: more weight across the material, rather than another small weight hanging from one corner.
