the present portable and collapsible blind 10 may include a cover 12 , at least one elongated member 40 , and a fastener 50 . the components through interconnections hereinafter described , provides a window that may extend around the blind 10 and is adjustable in a variety of unique manners . each component will be discussed in serial fashion . the flexible cover 12 , which may be made of flexible materials , can be mounted on a support structure 14 . the cover 12 may have at least one side wall 16 , 18 , 20 , and 22 together with a top 24 . a single side wall configuration can be used if desired , perhaps in a cylinder shape , which while commonly viewed as one side wall is technically an infinite number of side walls , or as a single flat surface wall . at least one side wall 16 , 18 , 20 and / or 22 may include a top edge 26 and a bottom edge 28 , with the top and bottom edges 26 , 28 cooperatively defining a window 30 . the top edge 26 and bottom edge 28 are terms used relative to the window 30 and not the side walls 16 , 18 , 20 , 22 . side walls 16 , 18 , 20 , 22 may cooperatively provide the top edge 26 and 28 such that the window extends across a plurality of the sides . at least one , but preferably a plurality of elongated members 40 , which may be straps , poles , cords or other similarly functional structures , extend across / adjacent the top and bottom edges 26 , 28 . the elongated members 40 may be vertical , perpendicular to the edges 26 , 28 or in any other functional orientation . the elongated members 40 at each end 42 , 44 may be secured a distance above the top edge 26 and below the bottom edge 28 of the side walls . the portion of the side walls 16 , 18 , 20 , and 22 that is between the ends 42 , 44 desirably has a surplus of fabric such that the bottom edge 28 may be lifted well beyond the point at which the top edge 26 may reach down . the overlap may appear to be structured as one or more flaps if the window is such that it cannot circumscribe the blind 10 . the elongated member 40 is desirably positioned to be taut and is fastened at fastening point 46 perhaps with stitching to the side walls . one may determine the height of the bottom edge 28 of the window 30 or the top edge 26 of the window 30 as shown in fig2 - 5 . the gap 32 of the window 30 may then be determined via adjustment of the opposing edge 26 or 28 . multiple elongated members 40 allow the user to adjust the window position 34 and gap 32 at varying points along the length of the window 30 , creating either a parallel , skewed or irregular relationship between the top and bottom edges 26 , 28 of the window 30 as shown in fig6 . a plurality of selective fasteners 50 can be independently and fixedly joined to the top and bottom edges 26 , 28 of the window 30 . such fasteners 50 may join to the elongated members 40 , allowing the fastener 50 to selectively secure the top or bottom edges 26 , 28 at the desired location relative to the elongated member 40 . the preferred fastener is a clip 52 that permanently or fixedly secures to the top or bottom edge 26 , 28 and slidably engages the elongated member 40 such that it may selectively lock to the elongated member 40 at any desired point . other fasteners such as ties , hook and loop fabric , snaps , buttons or other suitably arranged fasteners are equivalents . the clips 52 allow independent adjustment of one of the edges 26 , 28 at a point along the length thereof and securement of that edge at a fixed location relative to the blind 10 at that point . the blind 10 has been described with the window 30 oriented a preferred direction , e . g . horizontally . one skilled in the art will realize that orienting the top and bottom edges 26 , 28 such that they are side edge or angled edges with a corresponding movement of the elongated members 40 allow one to orient the window in any desired direction . in operation , the user constructs the blind 10 . the fasteners 50 secured to the bottom edge 28 are fastened to the elongated member 40 at a level where the user would prefer the bottom edge of the window 30 . the user then secures the fasteners 50 joined to the upper edge 26 at a point along the elongated member 40 where the user would prefer to have the top edge of the window 30 . the window 30 maybe lowered via lowering the lower edge 28 and the window may be raised via raising the upper edge 26 . in either case the opposing edge 26 or 28 may be used a corresponding amount to maintain size of the gap 32 . since each fastener 50 can be moved independently , the user can determine whether the edges 26 , 28 are parallel , skewed or other arrangement . although the present invention has been described with reference to preferred embodiments , workers skilled in the art will recognize changes may be made in form and detail without departing from the spirit and scope of the invention .