Preventive lifestyle interventions are needed to address challenges in engaging men in conventional health programmes. This process evaluation examined the feasibility and acceptability of HAT TRICK, a gender-sensitized programme targeting physical activity, healthy eating and social connectedness. A mixed-methods approach was utilized to examine the effectiveness of recruitment and selection processes, facilitators' experiences and challenges and participant experiences with the programme. Evaluation measures included participant flow data and baseline assessments, facilitator debriefs, a post-intervention process evaluation questionnaire and telephone interviews with a subsample of participants. Participants (n = 62) were overweight (body mass index [BMI] > 25 kg m[superscript -2]) and inactive (<150 min of moderate to vigorous physical activity [MVPA] per week) men with a mean age 51 ± 10.1 years. Participants reported high levels of satisfaction, acceptability and engagement with the intervention programme, content and resources. Facilitators noted the importance of creating a friendly, non-judgmental environment and observed that intervention content was best received when delivered in an interactive and engaging manner. Future programme refinements should consider strategies for strengthening social support, as well as opportunities for leveraging participants' interest in other health-related issues (e.g. mental health). Findings yield valuable information about the implementation of gender-sensitized interventions for men and demonstrate the importance of male-specific engagement strategies for reaching and engaging overweight, inactive men.