Are baby hammocks a safe place for baby to sleep in?

INTERVENTION: Study of 30 babies aged 6‐12 weeks age, randomised to either sleep in a commercially available hammock ( yet to be determined) or a standard type bassinete for 1 daytime nap ( approx 1‐3 hours). Babies will have limited sleep studies recorded using Sandman Pocket Express (2008). Sleep studies will be analysed for sleep state, mean oxygen saturation, desatuartion events and respiratory events. CONDITION: Sleep apnoea Sudden unexplained death in Infancy (SUDI) PRIMARY OUTCOME: number of episodes haemoglobin oxygen desaturation events measured by cutaneous oxygen sensor SECONDARY OUTCOME: mean haemoglobin oxygen saturation measured by cutaneous oxygen sensor INCLUSION CRITERIA: Healthy, normal full term infants