Looks a bit like a body dump kit, doesn’t it? Tarp, straps, garbage bag, etc..
Do you even need to do it? Depends on what zone you’re in and what fig variety you have. Some are more cold tolerant than others. Zone 6 is borderline. If it is a severe winter, your fig will likely die to the ground; a mild winter and it might be fine unwrapped. For zone 6, around Thanksgiving is a good time to wrap your fig tree. You need to wait until it is completely dormant, then get it done before hard freeze begins.
Wrapping a fig tree for the winter gets more involved as the tree gets bigger each year. A few thin branches are easily corralled with twine.
Start by pruning off any thin branches that stick out and will tangle or be in the way as you cinch the main branches together. Trim down the height to what you can manage.
Fig branches are very flexible. A cinch or cam strap is a good tie to start with, because the branches will give a lot at first. You need to get one that’s long enough to go around the widest circumference, with a foot extra for you to pull on. Once you’ve pulled it tight, leave it overnight. Over the next few days, keep tightening. If you want it tighter but don’t have the strength, attach a ratchet strap above or below the cinch strap. As you continue tightening, you can remove the cinch strap.
Once it reaches a width that you can manage, wrap your first layer or breathable fabric. Painter’s canvas works well, because it’s tough. Burlap is trickier to manage. Choose a size that will completely wrap around. Don’t let it touch the ground, because you don’t want it wicking up moisture. Dry is good. It’s alright to not reach the top. You’ll be wrapping a layer of tarp over the canvas to weatherproof it. The tarp should cover the entire length. Both the canvas and tarp can be held in place with tape, but glue residue makes the the canvas and tarp sticky and more difficult to manage the following year. Cam straps work. The neon ones in the photos are cheap luggage straps.
To cap it off, a tough trash bag works well, just tape it on to prevent wind from tearing it off.
Zip ties and earth staples help to secure the tarp.
In spring, unwrap around St. Patrick’s Day, while it is still dormant.