A 3-season sleeping bag is a versatile sleeping bag designed for use in spring, summer, and fall. It offers a balanced combination of warmth and weight, making it ideal for the varying weather conditions of these seasons.

Temperature range:

• A standard 3-season sleeping bag is designed for temperatures from approximately 39.2°F to +66.2°F comfort range.
• A 3-season light sleeping bag (for use from late spring to early autumn) typically covers a comfort range of about 46.4°F to +75.2°F.

These sleeping bags therefore provide sufficient warmth for cooler nights in spring and autumn and remain comfortable on milder summer nights.