We theoretically demonstrate a novel optical bottle beam that is produced by exploiting the self-bending characteristic of circularly arranged Airy beam (AB) arrays. The AB arrays propagate with an inward acceleration to generate such an optical bottle beam, whose size can be flexibly controlled by changing the spacing distance between ABs in the input plane. Moreover, the intensity of our proposed optical bottle beam is significantly increased in the output plane by superposing multiple coherent ABs, as compared to the case of the conventional Gaussian beam (GB). Numerical simulations are performed, the results of which show that the tunable optical bottle can be formed by exploiting the self-bending property of ABs. Some possible applications are also discussed. We believe that the intriguing characteristics of the tunable optical bottle can lead to novel techniques in medical treatment and atom manipulation.