When the temperature is in between, but the breeze is cold, you might find a cap is a bit too hot, but your ears get cold without one. Headbands and ear warmers are the perfect solution.
Most are thin enough to fit easily under a helmet, and they should provide just enough protection to stop your delicate shell-likes feeling frosty. Many also come with windproofing, for added protection.
Exteondo Letras Headband
Size: One size
Price: £25.48
Available from: Always Riding
Polaris Headband
Size: One size
Price: £8.09
More information: J.E. James Cycles
Endura FS260 Pro Roubaix Headband
Sizes: L/XL
Price: £11.99
More information: Evans Cycles