Objective To evaluate the effectiveness and safety of an ultra-lowcost uterine balloon tamponade package (ESM-UBTTM) for facility-based management of uncontrolled postpartum haemorrhage (PPH) in Kenya, Sierra Leone, Senegal, and Nepal.Design Prospective multi-centre case series.Setting Facilities in resource-scarce areas of Kenya, Sierra Leone, Nepal, and Senegal.Population Women with uncontrolled postpartum haemorrhage in 307 facilities across the four countries.Methods A standardised ESM-UBT package was implemented in 307 facilities over 29 months (1 September 2012 to 1 February 2015. Data were collected via a multi-pronged approach including data card completion, chart reviews, and provider interviews. Beginning in August 2014, women who had previously undergone UBT placement were sought and queried regarding potential complications associated with UBT use.Main outcome measures All-cause survival, survival from PPH, and post-UBT use complications (surgery, hospitalisation, antibiotics for pelvic infection) associated with UBT use.Results 201 UBTs were placed for uncontrolled vaginal haemorrhage refractory to all other interventions. In all, 38% (71/ 188) of women were either unconscious or confused at the time of UBT insertion. All-cause survival was 95% (190/201). However, 98% (160/163) of women survived uncontrolled PPH if delivery occurred at an ESM-UBT online facility. One (1/151) potential UBT-associated complication (postpartum endometritis) was identified and two improvised UBTs were placed in women with a ruptured uterus.Conclusions These pilot data suggest that the ESM-UBT package is a clinically promising and safe method to arrest uncontrolled postpartum haemorrhage and save women's lives. The UBT was successfully placed by all levels of facility-based providers. Future studies are needed to further evaluate the effectiveness of ESM-UBT in low-resource settings.Keywords Maternal mortality, postpartum haemorrhage, uterine balloon tamponade. Please cite this paper as: Burke TF, Ahn R, Nelson BD, Hines R, Kamara J, Oguttu M, Dulo L, Achieng E, Achieng B, Natarajan A, Maua J, Kargbo SAS, Altawil Z, Tester K, de Redon E, Niang M, Abdalla K, Eckardt MJ. A postpartum haemorrhage package with condom uterine balloon tamponade: a prospective multi-centre case series in Kenya, Sierra Leone, Senegal, and Nepal. BJOG 2016;123:1532-1540