QUOTE (Dylan's Mummy @ 27/12/2012, 10:21 AM)
I'm not sure about the sheets but the matress protector we bough could easily be adjusted to fit a different cot size. It came from Target. It doesn't have material around the sides so doesn't exactly need to fit around the edges of a mattress. The elastic is about 30 cm from the top and bottom and just goes across to the other edge. If your matress is smaller you could just tie a knot in the elastic.
I've been looking for mattress protectors that have elastic opposed to being fitted but our local target store doesn't have any and the only one listed on their website is fitted also but I'll keep looking. Your right, I could easily run a stitch down the sides to make it smaller if I find some.