✓ LATEX FREE: Wipe clean and store away from heat source. ✓ INCLUDES 2 UNITS: Bilateral design, can be worn in either shoe or both shoes at the same time. ✓ EASILY ACCOMMODATED IN FOOTWEAR: Simply peel away underlayers and position against heel wall of shoe. ✓ AVAILABLE IN 2 DENSITY: Blue top cover inserts / Mid Density OR Navy top cover Insert / Firm Density. ✓ DISCREET HEIGHT GAIN: Ideal for up to 15mm invisible height gain if worn as a pair (one in each shoe). ✓ ADJUSTABLE HEEL LIFT / ELEVATION: Simply peel-away 5 layers on underside of insert to achieve desired heel elevation from a max 15mm to 12mm, 9mm, 6mm, 3mm. ✓ INDICATIONS FOR USE: Effective treatment for leg length discrepancy, plantar fasciitis, achilles tendonitis and calf tightness. ✓ CLASS 1 MEDICAL DEVICE: Designed by GB Healthcare Professionals and supplied to UK Hospitals.