EVS R4 Neck CollarThe R4's low profile and lightweight (ADULT 635 grams YOUTH 386 grams) design provides superior range of motion without sacrificing function. Minimizes risk of axial compression, hyperflexion, hyperextension and lateral hyperflexion. Easy front entry system. Provides amazing range of motion of head. Soft rubberized edges for increased comfort. Fully adjustable sizing. Very comfortable and lightweight
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