Ossur Philadelphia® Cervical Collar, One Size Fits Most, Sold As 1/Each Ossur Php-Aa X-Ray, Ct, Mri Lucent Restricts Cervical Spine Flexion, Extension And Rotation Comparably To The Original Philadelphia Collar Adjustable Bilateral Fasteners Ensure Proper Fit. Total Cervical Arch Support Maintains Neutral Alignment Of The C-Spine. One Size Fits Most Necks, 10 – 19 Inches In Circumference. Cervical Collar, Philadelphia W/Trac Opn Adj Rigid Cervical Collar Ossur® Philadelphia® Preformed Adult One Size Fits Most Two-Piece / Trachea Opening Adjustable Height 10 To 19 Inch Neck Circumference Ossur® Philadelphia®Sku: Mck-812385_Ea Mfgr Sku: Php-Aa812385_EaShips In 2-7 Days