Abstract: A rate dependent tether for securing a shoe to a user, and footwear incorporating the rate dependent tether. The rate dependent tether may include a tube filled with a shear-thickening material and at least one cable or ribbon. In conditions of normal, low, or no intense activity by the user, the rate dependent tether's deformation resistance is low allowing the rate dependent tether to be extended to allow insertion or removal of the foot. At active levels, for example, participating in sporting events or intense activities, the rate dependent tether's deformation resistance is high preventing the rate dependent tether from loosening and securing the shoe on the user. The rate dependent tether may be connected to a saddle. A rate dependent insole for footwear, a support impregnated with a shear-thickening fluid, a rate dependent footcone, and rate dependent bands are also described.

Abstract: A hydration sleeve can include: a band of sleeve material shaped and dimensioned to fit around a user's limb; a bladder pocket connected to the band of sleeve material; and opening extending into the bladder pocket to permit insertion of a hydration bladder into the bladder pocket; and a mouthpiece port extending through the band of sleeve material. Other embodiments and features, including single-use hydration bladders and garments incorporating hydration sleeves are described.

Abstract: A hydration sleeve can include: a band of sleeve material shaped and dimensioned to fit around a user's limb; a bladder pocket connected to the band of sleeve material; an opening extending into the bladder pocket to permit insertion of a hydration bladder into the bladder pocket; and a mouthpiece port extending through the band of sleeve material. Other embodiments and features, including single-use hydration bladders and garments incorporating hydration sleeves are described.

Abstract: A hydration sleeve can include: a band of sleeve material shaped and dimensioned to fit around a user's limb; a bladder pocket connected to the band of sleeve material; an opening extending into the bladder pocket to permit insertion of a hydration bladder into the bladder pocket; and a mouthpiece port extending through the band of sleeve material. Other embodiments and features, including single-use hydration bladders and garments incorporating hydration sleeves are described.

Abstract: There is provided a kickboard for use in water, the kickboard comprising a central hull having a first surface and a generally opposing second surface. The hull is disposable in the water such that the first surface faces away from the water and the second surface is in the water. The second surface defines a convex configuration.