■ TUSA M7500 ■ The best-selling mask has evolved into TUSAs best-selling mask. The M7500 has been improved with a comfortable fit and a round edge structure that prevents marks from being placed. J spec skirt for Japanese people; Contents: 6.7 fl oz (170 cc); Frame dimensions: 2.8 x 6.1 inches (71 x 156 mm); Fitting dimensions: 4.5 x 5.1 inches (114 x 130 mm); Weight: 6.3 oz (188 g); Hard case included; TUSA SP451/SP451QB; External dimensions: 38 x 11 0.2 inches (5 mm); Weight: 4.9 oz (140 g); Contents: 4.9 fl oz (145 cc); Regular size pipe; Mini size mouthpiece.