The Boab balances comfort with conscious design.Sea to Summit says:The Boab is a great choice for campers and vehicle-based adventurers looking for a roomy, comfort-oriented sleeping bag. A #5 zipper continues through the footbox, and the double sliders mean the zipper can be opened in either direction for ventilation. For the warmest nights, open the Boab flat as a quiltOur VerdictThe Sea to Summit Boab 1C focuses on comfort without overcomplicating things. Its tapered rectangular cut offers generous room to move, ideal for side sleepers or anyone who finds standard mummy bags too restrictive. While not ultralight, the weight feels justified given its warmth and durability.The shell and liner are made from 50D recycled polyester with a PFAS-free water-repellent finish. Both fabrics are soft to the touch yet feel tough enough for repeated use. Insulation is reliable into the low single digits, and the offset synthetic fill does a solid job of minimising cold spots. The full-length zip includes a plough to reduce snagging and allows the bag to compress surprisingly well for a synthetic model.Double zip sliders run from shoulder to footbox, providing excellent control over ventilation. The ability to open it flat adds welcome flexibility for warmer nights or camp use as a quilt. Thoughtfully designed and sustainably made, its a dependable choice for those who value comfort, room to move and simple practicality.- Reviewed by Ultralight Outdoor GearFeaturesBluesign approved, 50D recycled polyester shell with PFC-free DWR. 50D bluesign-approved recycled polyester liner.100% RCS-certified, post-consumer, recycled, multi-denier synthetic insulation.Generous, gender-neutral cut offers plenty of room to move ideal for those who find mummy bags constrictive.SpecificationsComfort: 2C | 34FLower Limit:-1C | 30FFit: Tapered rectangularShortWeight: 1212gMax User Height: 170cmRegularWeight: 1374gMax User Height: 185cmRegular WideWeight: 1540gMax User Height: 185cmLongWeight: 1539gMax User Height: 198cmMaterial & ConstructionFabric – Bluesign approved, 50D recycled polyester shell, PFC-free DWR. 50D bluesign- approved recycled polyester liner.Insulation – 100% RCS certified, postconsumer recycled, multidenier polyester. Offset insulation avoids cold spotsZip – #5 Side zipper continues through footbox. Zipper plough, double sliders. #5 half length zipper on opposite side.Foot Box -Tapers to foot-end zipperPillow Integration – Hood accommodates Regular Aeros PillowHelp & advice:The Ultimate Guide to Lightweight Sleeping BagsTime-Saver Guide to Choosing a Sleeping BagSea to Summit Sleeping Bag & Quilt GuideSea to Summit Sleeping Mat GuideAbout Sea to Summit

The Boab balances comfort with conscious design.Sea to Summit says:The Boab is a great choice for campers and vehicle-based adventurers looking for a roomy, comfort-oriented sleeping bag. A #5 zipper continues th