Sofa cushion slippage situation. Any solutions?

[Threadworm]

Our old settee has done good service for 15 years but the removable cushion bits that you sit on have decided to keep slipping forward for no good reason.

I don't believe in the mad philosophy of furniture store commercials -- i.e. that we should all be buying new settees all the time. I am a one-settee-per-lifetime kind of a gal. So how can I convince the cushions to stay in place like they used to? Anyone else had this problem??

Sorry, boring.

Velcro? Some sort of non-slip thing, maybe, like you put under rugs?

Oh, yes, the anti-slip things for underneath rugs might work. What puzzles me is why it is happening in the first place. Might be related to made leaping about of DSs.

Thanks Jackieno