35mm as opposed to the advertised 11mm. Die Mircoqualitaet ist miserabel. POOR MATERIAL. These are great! Intro : I needed a speaker for the rides i go to because our vans speakers dont work and it would be more expensive to buy the speakers and the labor to put them all together would be eh. Theyre the exact same price, and about the same shipping time. Super buen producto GIGANTIC! Ho comprato queste infradito perché entusiasta delle scarpe hey dude, leggere, flessibilissime, in una parola: comode, come non avere nulla ai piedi, l’infradito paradossalmente è più rigido e costrittivo della scarpa, eppure ho un piede molto magro; in sintesi comode ma deluso nel confronto con la scarpa The sound is great and the battery life is the best I’ve ever had.