I Love Oxygen Unisex t-shirt

Here in Colorado, we hike higher, breathe harder, and laugh louder—because we know the struggle is real when you're a mile (or two) high. That’s why 303 Threads brings you the “I Love Oxygen” tee, a breathable tribute to our favorite invisible life force. Crafted for comfort and laughs, this shirt is perfect for mountain lovers, altitude rookies, and anyone who's ever underestimated a 14er. Whether you’re crushing trails or just catching your breath after walking up the stairs in Denver, this tee’s got your back (and your lungs). Made from ultra-soft cotton with a fit that says “I love oxygen, but I also love looking good,” it’s your go-to gear for high-altitude humor and low-key flexing. Bonus: Wearing this shirt may increase your chances of being handed trail mix by strangers. Breath easy. Laugh hard. Rock the 303. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!