I recently bought a second-hand Snuzpod 2 on Gumtree and have splashed out on a new mattress for it. Does anyone know if I can buy fitted sheets other than the branded ones (£20 for 2 sheets seems steep to me!)? I've been looking on Amazon and Mothercare but getting confused about what will fit. If anyone has experience of the same I'd be very grateful for recommendations! Thank you.