Fiber Carbon Tripod

I’m in the market for a light weight fiber carbon tripod to be used with big glass that can be carried on long day trips preferable attached to my backpack. Any suggestions would be appreciated?

I like RRS tripods. Gitzos are good too. 3 series tripod or bigger for big glass.

What is your budget.?

I'll add to the above suggestions, I personally use a Feisol 3371 with a 600mm f4 is, with no worries at all.
37mm top tubes, weights in at 2.2kg, 67cm closed length, but that's because I chose a 3 section over a 4.

How big is big glass?

The head is at least equally as important as the legs. Do you already have a head in mind?

For the past 2 years I have been using a Job Design Algonquin tripod. A Wimberley WH-200 sits on top. Never an issue with any of my bodies with the 500 F4 and extenders. Solid as a rock. 36mm top tubes.
Made here in Canada.