Soft polyester sleeping bag liner — skin-friendly, warm, and built to last. Key benefits Comfort and warmth: Soft polyester fiber feels gentle against skin and improves the thermal performance of your sleep system to help keep you warm. Flexible temperature control: Splicable design lets you use the liner as a single layer for mild conditions or join layers for extra insulation when nights get colder. Long-lasting appearance and fit: Fabric resists pilling, wear, and abrasion, and keeps its elasticity and shape so it won’t deform or fade with regular use. Multipurpose and practical: Functions as a sleeping bag liner, blanket, or lightweight quilt, giving you one item that covers multiple needs. Features and performance Material: Made from soft polyester fiber for a smooth, skin-friendly surface and dependable warmth. Durability: Wear- and scratch-resistant construction with strong elasticity preserves form and color through repeated use. Low maintenance: Fabric resists pilling and deformation so it stays functional and tidy over time. Versatility: Designed for single- or double-layer use to match personal preference and changing weather. Use scenarios Camping overnight: Use as a single-layer liner for added comfort and warmth inside your sleeping bag, or combine liners for colder nights. Backpacking and hiking: Lightweight, packable option to add thermal layers without bulky gear when you need extra insulation on trail. At home or travel: Use as an extra blanket or quilt in a cabin, hostel, or living room for quick, comfortable coverage. What it solves Adds warmth without replacing your sleeping bag. Provides a soft, hygienic layer between you and your sleeping bag. Extends the life of outer sleeping gear by reducing direct wear. Adapts to different temperatures and personal comfort preferences. Materials and care Material: Polyester fiber (soft, skin-friendly). Performance: Thermal improvement, pilling-resistant, wear- and scratch-resistant, elastic and shape-retaining. This liner gives comfortable, versatile thermal protection and durable performance for outdoor and indoor use.