Neck gaiters, neck tubes, multifunctional headwear, balaclavas…whatever you call them, their super duper popular in the great outdoors. And for good reason: they’re a fantastic multi-talker whether you’re hiking, backpacking, mountain biking, camping, kayaking, you name it. You can wear them to protect your neck from the sun in the summer or keep it warm in the winter. Wear it as a sweat band during high-output activities or to keep your hair out of your face. Knot the top and wear it as a hat or pull it over your face and head like a balaclava. It’s a face mask, a hair tie, a sweat mop when wrapped around your wrist, water filter, the possibilities are almost as endless as those offered by a towel (where my HGTTG fans at?). But not all neck gaiters are created equal. Especially where sustainability is concerned. So if you’re looking for a more eco-friendly neck tube, we’ve got you covered. Read on for 5 of the best neck gaiters that are also sustainable.