These sleeping bags are ideal for colder climates, as well as spring, summer and autumn use in the UK. Due to the additional filling needed pack sizes are larger, but we try and stock models with the most compact dimensions, making them suitable for backpacking around the world! 3-4 season sleeping bags are a great choice if you’re travelling to countries where climates can vary, especially if you’re visiting multiple countries during your gap year. Designed for use in cooler conditions, 3-4 season sleeping bags are a popular choice for trekking and have an average comfort temperature of 0°C.