Three folders will be made, one for each bariatric surgeon, and 25 Covidien cards and 25 Ethicon cards will be placed into each for a total of 150 patients. All bariatric surgeons are trained and familiar with both devices. Once consented, a card will be removed at random to determine which stapler will be used. Bioabsorbable staple line reinforcement will be utilized with both staplers. Once in the operating room, the case start time, time from first staple firing to completion of sleeve, total stapler loads required, number of staple misfires, character of any staple line bleeding, and time for tech to load each cartridge will be recorded on a data collection sheet by a research resident, listed as an associative investigator on this protocol. The subject's post-operative course will follow the bariatric protocol. During follow-up, they will be monitored for weight loss, post-operative complications, and any other required interventions. This information will be obtained by reviewing the subject's medical record after follow-up appointments. Per the institutional bariatric protocol, subjects will follow-up at 3 weeks, 6 weeks, 3 months, 6 months, and annually. If a subject withdraws consent for the study prior to surgery, they will still receive surgery and perioperative treatment in line with institutional protocol, and they will be withdrawn and create a vacancy for a new subject. If a subject withdraws consent after surgery, data collection will cease for that subject. The investigators will clarify whether they want all data to be removed from the study or if they simply want no more data to be entered into the study and abide by their wishes, and they will remain in the original randomized group in accordance with intention-to-treat principles.