A randomized, double-blinded, single center, parallel design pediatric study, on 45 subjects with type 1 diabetes (T1D), aged six to 15 (inclusive) years, measuring sensor time in glucose values within range 3.9 - 10 mmol/l (70 - 180 mg/dl) achieved using the FreeStyle Libre Flash Glucose Monitoring System (FGM - intervention, Abbott Diabetes Care, California, USA) versus Self-Monitoring Blood Glucose (SMBG - control).