Global Camping Sleeping Bag Market Size, Share & Demand Report By Product Type (Rectangular Sleeping Bags, Mummy Sleeping Bags, Semi-Rectangular Sleeping Bags, Double Sleeping Bags), By Insulation Type (Synthetic, Down, Hybrid), By Temperature Rating (Summer, Three-Season, Winter, Extreme Cold), By End Use (Recreational Camping, Backpacking & Trekking, Mountaineering, Military & Emergency Relief), By Distribution Channel (Offline Retail, D2C, E-commerce), By Region & Segment Forecasts, 2025–2030