I still use my Helly Hansen base layer top, it's 20+ years old. Had a few holes sewn up but still going strong.

1998 MSR Ti Cutlery I'm sure I have older stuff but these do come out regularly.

Optimus Brass small petrol stove. Bought 1988
Still chugging out the heat :) Heavy but great in winter

https://lh6.googleusercontent.com/-BsJk ... _11_30.jpg

Last year I finally replaced my waterproof (Endura) and tights (Pearl Izumi) which had both lasted since 1995.

I've also still got a Mavic/XT front wheel which is going strong after 15 years (though only v-brake obviously).

I've got a very battered looking but still highly functional MSR XGK II stove from about 1994.

hmmm, regular use.
PHD Diamir 500 winter sleeping bag. 10 years old.
Some Buff's
stainless pans for car camping, about 15 years old

I do I have older stuff that gets used occasionally but not all that often propably

I have loads of gear 20+ years old and still going strong - but not bikepacking friendly

Unless someone fancied lugging a gas bottle if I bring a double burner stove?! My trangia is also nearly 20 years old and the burner does get bought with me on bikepacking trips.

My rab atlas bag is 15 yrs old and also still going strong.

um
I have an irc mud mad tyre from 2003 that gets dragged out every year for a month or so............
oh, and my legs are nearly 43 years old.

I have quite a bit of stuff I bought as a student, I'm 42 now. Bloody hell, that makes me feel old. I even have my first rope although it was last used as a zip line for a camera

I've got the smaller Trangia that used to be my brothers, I reckon it's approaching 30 years. Saunders jet packer also dates from mid to late 80s. Hasn't been used since 1997 but last time I looked in the storage bag it was ok :?

MSR Whiperlite and a Thermarest (long) both bought in the States in 1989 and have seen lots of action on climbing and sea kayaking trips. Both are still functional (although the recently purchased NeoAir comfort has meant the Thermarest has been retired until the boys can use it).
MSR has seen some O-ring changes and the odd fettle of the jet etc. but the Themarest has never been repaired and still holds pressure all night.

10 year old Montane Extreme smock, still my fall-back gallery for winter adventures. Some very aged Helly thermals as well

Ridgerest 20 years+