Sea to Summit Ultralight XR Review – Is R 3.6 Warm Enough for 30°F?

🔗 Sea to Summit Ultralight XR Sleeping Pad (REI): https://geni.us/S2SUltraXR 🔗 My Sleep System – Zenbivy Bed: https://geni.us/ZenbivySleep In this video, I field test the Sea to Summit Ultralight XR insulated sleeping pad in 30°F conditions to see whether an ASTM R-value of 3.6 is actually warm enough for real-world three-season backpacking. On paper, R 3.6 can sound borderline for freezing temps. But real-world performance depends on more than just a number. I break down: • ThermalCore insulation + reflective layers • Air Sprung Cell comfort design • Packability and weight • Valve placement • PillowLock system • Who this pad is for (and who it isn’t) This may be the most comfortable and packable insulated pad I’ve personally used for 3-season backpacking. 🎥 HIRE ME https://www.joncontivisuals.com 📱FOLLOW ME ON INSTAGRAM https://www.instagram.com/jon_conti 🏕SUPPORT THE CHANNEL WHEN YOU SHOP REI Rei Affiliate Link - https://geni.us/ShopREI Some of the links above are affiliate links, which means I may earn a small commission if you purchase through them — at no additional cost to you. It helps support the channel and allows me to continue testing gear in real-world conditions. 0:00 Intro 0:21 Warmth 1:52 Comfort 2:24 Packability 2:40 Air Valve 3:58 Pillow Lock 4:52 The Brand 5:35 Final Recommendation