Street hockey ball Higher heat stability and abrasion (stickiness) resistance  Super High Density, approximately  91a durometer  Proprietary formula developed and used only by DGEL   diameter: 2.75" (70mm) diameter   weight: 70 grams   Recommended temperatures of 60 degrees and higher   New brighter orange color   Below are different specifications:   1.  For Winter use:  weight around 54+/-4g,  Diameter around 66+/-1mm   2.  For Summer use:  weight around 72+/-4g,  Diameter around 67 +/-1mm   3.  Low-bounce ball:  weight around 75+/-4g,  Diameter around 66 +/-1mm