Best thread for Sewing Jeans?

I haven't bought any thread in a long time.

I am in the process of hemming a new pair of jeans for dear hubby.  I will be doing this by hand.

I went to eBay to buy some thread and never imagined that there would be so many different threads to choose from.

What will be the best kind of thread to buy?

Any suggestion on the best way to hem jeans?

Do you need to shorten length? If so, I would keep the original hem so you don't need to buy specific Jeans thread for topstitching. Say if you need to shortern by 3 inches, cut the hems off with half an inch above the topstitch line. Remove 2 inches off the pant legs. For straight legged pants, there's no change in the circumference so just join the legs and hems back together with 0.5 inch seam allowance. Zigzag to finish the edge. Thread color doesn't matter since it's not showing, any regular sewing thread will work.
Here's a picture of my Jeans done the same way.

May, that is a great idea, thank you.  This is much better than my plan.

And I will not need to buy thread, maybe.

I have two sewing machines.  One if I remember correctly was messed up by our daughter and I am not sure dear hubby will want to fix it.

The other one is buried under a plant/seed station.

I buy my thread in a "cone" - V69 polyester. I became used to this thread from sewing sails for a sailboat and now other thread just seems wimpy. It is available at upholstery stores typically. I have a few colors - black, white, blue, tan. I have a stiff piece of wire with a hook at the top - about 18-inches tall beside my sewing machine. The cone goes under the hook, and the thread goes up through that then down to the thread guide on the sewing machine. V69 thread will almost surely outlast the jeans.

Speaking of jeans, the knees on mine always go out first. I noticed that I got a blob of white elastomeric concrete roof sealer on a pair of work pants and it has passed completely unaltered through several wash cycles. So I am thinking of painting knee patches on ALL my work pants now; maybe will help preserve the knees a little longer?

Cade Johnson wrote:I buy my thread in a "cone" - V69 polyester. I became used to this thread from sewing sails for a sailboat and now other thread just seems wimpy. It is available at upholstery stores typically. I have a few colors - black, white, blue, tan. I have a stiff piece of wire with a hook at the top - about 18-inches tall beside my sewing machine. The cone goes under the hook, and the thread goes up through that then down to the thread guide on the sewing machine. V69 thread will almost surely outlast the jeans.

You have almost perfectly described my setup! (I have also stuck cones on top of wine bottles on the floor next to me when I'm sewing, and had the thread go through a hanger nearby before going to the machine feed).
My brother in law had a business doing piecework sewing clothing some years ago, and gave me his leftovers: many, many cones of thread.  Nearly all of it is poly, which is not my choice, but it does last forever.

Cade Johnson wrote:Speaking of jeans, the knees on mine always go out first. I noticed that I got a blob of white elastomeric concrete roof sealer on a pair of work pants and it has passed completely unaltered through several wash cycles. So I am thinking of painting knee patches on ALL my work pants now; maybe will help preserve the knees a little longer?

My approach is to double reinforce them *before* they get a hole. If you can find/adopt/scrounge a dead pair of jeans, the fabric on the back of the lower legs is usually in fairly good shape and makes an ideal patch. I also believe in, "go big, or go home". If I skimp on the size of the patch, Hubby or my son will just get a hole right above the patch!

I sewed my boys clothing when they were small. I used to triple reinforce the right knee and double reinforce the left, and they were usually just getting to the too disreputable for school use when the younger one was about to outgrow them!