While sexual consent is overall embraced as a promising concept centrally organizing feminist analysis and struggle against sexual violence, there are significant contentions related to feminist understandings of consent, revolving around the instability of the notion itself. In this presentation I address what I see as central theoretical themes in feminist discussions on consent, with a focus on tensions regarding how to make sense of the idea of voluntariness on which the concept of consent is based, in light of how gendered power structures constrain women’s freedom. First, I review how feminist contestations of notions of human autonomy and theorizations of structural power challenge the concept of consent. Second, I address how feminist scholars have drawn attention to the overlaps between normative heterosex and sexual violence, thereby destabilizing the boundary between consensual and non-consensual sex. Third, I consider how the notion of a grey area between consent and non-consent stands in a relationship of tension with concerns in the anti-violence movement to draw clear boundaries around the notion of consent. I conclude by suggesting a way of working towards a deepened culture of consent which embraces the ambiguity of sex, sociality and consent.