These Boots Are Amazing. They Are Brand New. I Dont See Any Make Or Model On Them. I Would Say These Would Work For 5.5 And 6. Theres A Sticker In The Back That Reads 35 . I Measured On The Soul 8 3/4 Inches From Toe To Heel. The Platform In The Front Meausres 2.5 Inches Tall And In The Back Measures 4 1/2 Inches Tall. The Boot Itself Measures 18 Inches Tall. These Have Buckles Which Are Adjustable On Each Side And A Zipper In The Back. Once They Are Buckled Where You Want Them To Be , You Only Have To Zip And Unzip To Get Them On And Off. The Only Flaw On These Is On The Left Boot On The Inner Side One Of The Buckles That Holds The Strap Down Came Off. It Still Buckles Tho.