Whether you call them flannels, thermals, thermal underwear or the classic "long johns", these navy beauties won't disappoint!. Details. Lightweight Bamboo Viscose fabric that keeps you warm and snug without feeling bulky in Navy Long JOhns.. Wraparound fabric waistband for maximum comfort.. Sustainably made!. 95% Bamboo Viscose, 5% Elastane.. When the temperature drops, don't miss a step with TBô Bamboo Navy Long Johns. Crafted from our signature lightweight bamboo fabric, these long johns offer warmth without the bulk. The Navy Long Johns ensure you stay cozy in colder weather, whether you're outdoors or lounging by the fire.. Transitioning seamlessly, the bamboo viscose fabric is light, flexible, and breathable. You may even forget you're wearing them! Smooth as silk, it keeps you clean and dry throughout the day, providing a snug and comfy fit no matter your level of activity.. Versatility is key; wear them on colder days, as an extra layer for workouts, or for relaxed moments at home. The long johns wraparound fabric waistband maximizes comfort, providing the support your lower body deserves.. Co-created with the input of TBô's 400,000-strong community, the Bamboo Long Johns are sustainably made, embodying our commitment to environmental responsibility.. Give your lower body the warmth, support, and style it deserves with TBô Navy Long Johns – where comfort meets fashion!