I bought the slippers on the left a little over two years ago. They were for M's hospital stay, so he'd have a little extra comfort shuffling those sterile halls during his forced marches back to strength and health. I bought the slippers on the right a little over two weeks ago, when it first turned really cold and E declared she wanted "inside shoes" like Daddy's.
Happy lungoversary, M. Stay healthy a long time. You've got gorgeous little creatures following in your footsteps.