TUBE SIZING INDEX

Measurements should be taken at the high point where the tube will ride, usually the sternum or lower rib cage. Alternatively waist measurements can generally work.

Note: All Neoprene tubes (Ocean Tour, Ocean Trek) will not work with a Seat Back that extends over the height of the cockpit rim.

Size	Description	Circumference (inches)	Circumference (cm)
XXS	ExtraExtraSmall	24-26	61-66
XS	ExtraSmall	26-28	66-71
S	Small	28-30	71-76
M	Medium	30-32	76-81
L	Large	32-35	81-89
XL	ExtraLarge	35-38	89-96.5
XXL	ExtraExtraLarge	38-40	96.5-101.5

                                                                                                                                                                                                                                                                       

Glacier model Tube

Size	Description	Circumference (inches)	Circumference (cm)
S	Small	20-30	51-76
M	Medium	30-40	76-101.5
L	Large	40-50	101.5-127
XL	XLarge	50-60	127-152

Sea model Tube

Size	Description	Circumference (inches)	Circumference (cm)
45"	Small	45	114
50"	Standard	50	127
55"	ExtraLarge	55	140
60"	ExtraExtraLarge	60	152