Portable sun and weather shelter

1. A portable shelter, comprising:

an umbrella foldable between open and closed positions, the umbrella including a pole and a canopy, a collar slidably positioned on the pole, and a plurality of frames connected to the collar and to the canopy;

the canopy including a plurality of outer edges forming a polygon, and with the canopy having a front and a rear;

a left flap permanently attached to a left side outer edge of the canopy;

a right flap permanently attached to a right side outer edge of the canopy, with the left flap spaced apart from the right flap, and with a rear free outer edge at the rear of the canopy, between the left side outer edge and the right side outer edge;

a plurality of front free edges outer edges at the front of the canopy;

with the left and right flaps extending from the canopy substantially to the ground when the canopy is set on the ground with the rear free outer edge of the canopy substantially in contact with the ground, and with the pole at an acute angle to the ground.

2. The portable shelter of claim 1 wherein the outer edges of the polygon are of equal length.

3. A portable shelter, comprising:

an umbrella foldable between open and closed positions, the umbrella including a pole and a canopy, a collar slidably positioned on the pole, and a plurality of frames connected to the collar and to the canopy;

the portable shelter having only a first flap and a second flap, with the first and second flaps spaced apart from each other and permanently attached to a perimeter of the canopy, the first and second flaps each having only three sides; and

with the first and second flaps extending from the canopy substantially to the ground when the canopy is set on the ground with the pole at an acute angle to the ground; and

with the first and second flaps each having a substantially horizontal lower edge when the pole is at the acute angle to the ground.

4. A portable shelter, comprising:

an umbrella including an upper pole section and a lower pole section;

a polygon-shaped canopy, a collar slidably positioned on the pole, and a plurality of frames connected to the collar and to the canopy;

with the upper pole section substantially equal to a radius of the canopy, and with the lower pole section fully retractable into the upper pole section;

the canopy including a plurality of outer edges forming a polygon having multiple sides including first, second and third sides;

a first flap attached to the first side of the polygon;

a second flap attached to the third side of the polygon, with the third side of the polygon not adjoining the first side of the polygon, so that the first flap is spaced apart from the second flap,

the first and second flaps each having only three sides;

the first and second flaps hanging down from the canopy substantially only to the ground when the shelter is set on the ground, and the second side of the polygon adjacent to the ground, when the canopy is set on the ground with the pole sections at an acute angle to the ground;

a first ring in the first flap and a second ring in the second flap, for staking the canopy to the ground;

a first and second clips on the canopy engageable with the first ring and the second rings, for holding the first and second flaps, respectively, in positions overlying the canopy;

first and second spaced apart windows in the canopy; and

one or more storage pockets on at least one of the first and second flaps.