purchased in mid 1970's at old Regina army&navy store that use to be on the NW corner of Broad&11th still in great shape..a bit of history for $100..is about what I paid for it way back then. Two-season sleeping bags are designed for slightly cooler nights in spring and summer, with a temperature range of 0 to +5°C (or approximately +30 to +40°F). They're also suitable for milder autumn nights, or for people who sleep cold even in summer.