How should the mattress be positioned in relation to safety?
Position the base of the cot in its lowest setting for maximum safety. Once your child can sit up unaided, continue using the base in the lowest position. Ensure that no more than one mattress is used and it must fit properly with gaps between the mattress and sides not exceeding 30mm.
From the official Mamas And Papas Mia Sleigh Cotbed manual, page 14
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