I have a huge fetish for slippers since my childhood !.. Great to see I’m not alone!
The only difference with you and your wife is that I prefer soft leather soles. It's much more sensual to me. Depending on the type of slippers, soft leather soles are sometimes much sturdier than you might think!.. That’s why I like soft sole slippers and genuine moccasins!
I completely understand why you and your wife like to wear slippers in all circumstances and in all places, because I feel the same when I wear mine! I love to wear certain types of slippers outside, to drive my car on long journeys, on the street, etc...
I love when people notice my slippers!
Here are some pairs of mine:
Modern jazz shoes: the upper part is made of very thin and very soft leather (no lining nor hard toe), and the sole is made of very thin and very soft suede (with very thin padded insole) :


I sometimes wear them outdoor, but only when weather is dry. I love to wear them on street or in public places!
Moccasins made of deerskin. It's a high quality leather, extremely soft! I made these mocs by hand. I mostly wear them at home, but I sometimes happened to wear them in mall!

My ballet slipper from french brand "Merlet"! The leather is very thin and very soft, without lining. They really feel like a second skin! Perfect to drive ma car for hours!..
