Adjustable neck seal

A sealing system for sealing a garment around an appendage comprising an annular flexible tube forming part of a garment and surrounding a passage through which said appendage is intended to protrude, a cord in said tube, said cord extending within said tube for a length over more than 360° measured around said passage so that said cord more than completely encircles said passage while contained within said tube, said cord having one end and an opposite end, said cord extending out of said tube through a wall of said tube so that said one end provides an accessible end outside of said tube for adjusting the length of said cord that more than completely encircles-said passage while contained within said tube and thereby adjusting the tension in said cord to increase or reduce pressure of said tube toward said appendage around the full periphery of said passage, the amount of said pressure effecting the effectiveness of a seal formed between the tube and the appendage and securing means to secure said cord to prevent relative movement between said cord and said tube, said securing means securing said cord relative to said tube at locations spaced along the length of said cord by a distance measured along said cord greater than the circumference of said passage, said securing means including means for releasably securing said cord to prevent relative movement between said cord and said tube at at least one of said locations.