Shape: Has a cone like shape that begins wide and progressively narrows.  There are two rising ascending trend lines that form the wedge and slope upward.  Price makes higher highs and higher lows within the pattern, and there are typically at least 2 reactions to each trend line.
Length: Typically 3-6 months
When does it occur: It usually occurs after an extended uptrend 
*The rising wedge is one of the most challenging patterns to accurately recognize and trade because it contains several Bearish AND Bullish characteristics.  The loss of upside momentum on each successive high gives the pattern its overall bearish bias. The series of higher highs and higher lows keeps the trend inherently bullish.  It isn’t until the final break of the lower ascending trend line that indicates the bearish nature of the pattern.