✔MORE COVERAGE - Gloo Square Glue Sticks are great for all crafting projects. This cute glue stick’s unique square shape allows application of adhesive easily into square corners like on photos and dries clear. No more lifted corners! ✔CLEAN & SAFE - Kokuyo Gloo is safe for kids and on most sensitive materials. ECO Certified in Japan, Gloo is Acid Free, Non-toxic, Photo Safe and most importantly free from gooey sticky messes! ✔VERSATILE - Gloo sticks are perfect for any arts and crafts project, working great on many crafting materials like cardstock, popscicle sticks, twine and many more! ✔CHOOSE TACK STRENGTH - BLUE – Our most popular craft glue appears blue on application. It is easy to see areas covered but dries completely clear and invisible. GREY – For projects that require extra stickiness, our high tack glue will do the job. ✔CHOOSE SIZE: Small - 88mm (3.5") x 22mm (1-1/16") x 22mm (1-1/16"); Medium - 105mm (4-1/8") x 32mm (1-1/4") x 32mm (1-1/4")